Jesus wants us to change what we think about when we speak of "treasure". If we treasure mansions, crowns, and things like this then we are failing to understand what He is talking about.
The first two stories that come to mind is the, 'good master' story as that was probably a money-changer.
Christians have 7 letters that define 14 possible relationships people can have with God that will define if they live through the 7 vials or not. The 1/3 that survive are 'repented Gentiles', their reward is to be alive for the 1,000 years, along with the whole House of Israel as the Re:20:4 resurrections are completed when the war against the Nations is completed:
Zec:13:8-9:
And it shall come to pass,
that in all the land,
saith the LORD,
two parts therein shall be cut off and die;
but the third shall be left therein.
And I will bring the third part through the fire,
and will refine them as silver is refined,
and will try them as gold is tried:
they shall call on my name,
and I will hear them:
I will say,
It is my people:
and they shall say,
The LORD is my God.
During the 1,000 years they gain enough wisdom that God sees them as sinless when He is sending 'other immortals' to the fiery lake. Fast-forward to the end of Re:22 as that is where the 'new earth' verses and the people alive for the 1,000 years are living in New Jerusalem and 'the rest' have been taken to different worlds where each married couple starts off like Adam and Eve at the end of Ge:2.
The people in the city will act like thge voice of God in Ge: as they pass along the wisdom they already have about the Kingdom of God. The rest of the new earth era follows that same pattern. At one point the people in the city are as wise as the Angels in their New Heaven (Mount Sion, Hebrews:12). They ascend there as the wisest people living outside the city move into the city. That progression continues forever.
There is 'already gathered' and 'not yet gathered'. If 2/3 are destined to died it is because they are needed as part of the flock as they are a much larger group than the ones alive for the 1,000 years. That alone should show that group, they are not as important to the whole story as they think they are.
The Church, historically, speaks of those who received their "martyr's crown", i.e. they suffered as martyrs and died for it. It is not that they have literal crowns in heaven, but rather their martyrdom is their crown.
Being persecuted can only happen when you encounter false Christians or Jews who have been blinded by God. He has a special mission for them as the 6-fingerd giants are all in the grave:
Eze:36:16-28:
Moreover the word of the LORD came unto me,
saying,
Son of man,
when the house of Israel dwelt in their own land,
they defiled it by their own way and by their doings:
their way was before me as the uncleanness of a removed woman.
Wherefore I poured my fury upon them for the blood that they had shed upon the land,
and for their idols wherewith they had polluted it:
And I scattered them among the heathen,
and they were dispersed through the countries:
according to their way and according to their doings I judged them.
And when they entered unto the heathen,
whither they went,
they profaned my holy name,
when they said to them,
These are the people of the LORD,
and are gone forth out of his land.
But I had pity for mine holy name,
which the house of Israel had profaned among the heathen,
whither they went.
Therefore say unto the house of Israel,
Thus saith the Lord GOD;
I do not this for your sakes,
O house of Israel,
but for mine holy name's sake,
which ye have profaned among the heathen,
whither ye went.
And I will sanctify my great name,
which was profaned among the heathen,
which ye have profaned in the midst of them;
and the heathen shall know that I am the LORD,
saith the Lord GOD,
when I shall be sanctified in you before their eyes.
For I will take you from among the heathen,
and gather you out of all countries,
and will bring you into your own land.
Then will I sprinkle clean water upon you,
and ye shall be clean: from all your filthiness,
and from all your idols,
will I cleanse you.
A new heart also will I give you,
and a new spirit will I put within you:
and I will take away the stony heart out of your flesh,
and I will give you an heart of flesh.
And I will put my spirit within you,
and cause you to walk in my statutes,
and ye shall keep my judgments,
and do them.
And ye shall dwell in the land that I gave to your fathers;
and ye shall be my people,
and I will be your God.
When Jesus says, "In My Father's house are many rooms" (translated in older translations as "mansions" when the more archaic meaning of "mansion" was simply referring to a place where a person stays), He is not saying we get elaborate palatial estates; He is saying we have a place that is with Him, "That where I am you shall be also" in the Father's oikia, dwelling, household, the place where the Father is we have a place to live for there are many monai, rooms. We have a place with Jesus, who is with the Father.
The 'servants' in Isaiah:65 are the people alive in Zec:14 as that is the 1.000 years. They live in New Jerusalem from the momemnt they enter that city until they ascent back to this same place, as Angels rather than 'perfected men':
Isa:51:6:
Lift up your eyes to the heavens,
and look upon the earth beneath:
for the heavens shall vanish away like smoke,
and the earth shall wax old like a garment,
and they that dwell therein shall die in like manner:
but my salvation shall be for ever,
and my righteousness shall not be abolished.
Heb:12:22-24:
But ye are come unto mount Sion,
and unto the city of the living God,
the heavenly Jerusalem,
and to an innumerable company of angels,
To the general assembly and church of the firstborn,
which are written in heaven,
and to God the Judge of all,
and to the spirits of just men made perfect,
And to Jesus the mediator of the new covenant,
and to the blood of sprinkling,
that speaketh better things than that of Abel.
But also, let us remember that "heaven" is only the intermediate state. We aren't destined to live as disembodied "souls" up in some place called "heaven" for all eternity. Our forever home is here on earth, when God makes all things new, when God renews and restores all of creation; new heavens and new earth; as we look forward to the resurrection of the body and the life of the Age to Come.
Only until people are as perfect as the angels in the verse above, then the people that are not given in marriage will ascend there where they can be given in marriage and have a child that is born perfected. The living and tree of life is how a spiritual being changes, so they can interact with the material world.
Jesus was a spiritual being the morning of His resurrection, by the coming evening God and taken Him to New Jerusalem and returned Him to this earth. People are spiritual at the end of the same day the two witnesses are resurrected. Within 2 months Jesus will have led the whole House of Israel and the Gentile Church to the living water and tree of life in the Eze:47 passage. The water is the same as the water in Zec:14, it will flow from the throne in the Re:4 Temple as it will be on earth for the 1,000 year reign.
When New Jerusalem lands at the end of Re:22 it is the only structure on this earth. The people from the GWT event exit the city, God gives each married couple a barren world to turn into an Eden. The flock is to do that to the whole universe. The people in the city never leave:
I anticipate that the greatest treasures of that future world will be the treasure of serving one another and enjoying God, and caring for God's good creation. So we should be living in the truth of those things now.
Isa:65:15-19:
And ye shall leave your name for a curse unto my chosen:
for the Lord GOD shall slay thee,
and call his servants by another name:
That he who blesseth himself in the earth shall bless himself in the God of truth;
and he that sweareth in the earth shall swear by the God of truth;
because the former troubles are forgotten,
and because they are hid from mine eyes.
For,
behold,
I create new heavens and a new earth:
and the former shall not be remembered,
nor come into mind.
But be ye glad and rejoice for ever in that which I create:
for,
behold,
I create Jerusalem a rejoicing,
and her people a joy.
And I will rejoice in Jerusalem,
and joy in my people:
and the voice of weeping shall be no more heard in her,
nor the voice of crying.