Your set up for judging how a prophecy is full filled and when would disqualify most of the Old and New Testament prophets, even Jesus. It's been over two thousand years and he's not here
You are very wrong. The criteria for being a prophet was set up by God. Jesus never said--I will come beck on Dec 3, 1953. He never set a date. You very well know that and that argument is just foolish. Same for the OT and any NT prophecy.
Prophecies are built on 'if' if Isreal obeys God they can go into the promised land. The answer to a prophecy is also in the eye of the beholder, I see many prophecy concerning the "falling away" in the New Testament and to you they just aren't there. It all depends on one's agenda.
Yes--those prophecies that have an if, are conditional. And the conditions are stated. When someone says that on such a date something will happen, and there is no if--it is unconditional and must come true and if not, then it was not of God. And the conditions of the "if" must be met. That is if a prophecy is dependent on a certain number of people being there, then that is what it has to be, such as when Abraham asked God if He would destroy the city if there were 10 righteous people---there weren't. If there had been 9 and the city spared, it would have been a false prophecy. If it is supposed to be an entire city that has to do something, then that whole city has to do it--such as with Nineveh. Everybody repented, not just a few, but everybody.
As for this D & C 111, this is prophecy:
"4. And it shall come to pass in due time that I will give this city into your hands, that you shall have power over it, insomuch that they shall not discover your secret parts; and its wealth pertaining to gold and silver shall be yours."
Then he is told the real treasure which will come are the people which will join the church.
This is D & C 111:
1 I, the Lord your God, am not displeased with your coming this journey, notwithstanding your follies.
2 I have much treasure in this city for you, for the benefit of Zion, and many people in this city, whom I will gather out in due time for the benefit of Zion, through your instrumentality.
3 Therefore, it is expedient that you should form acquaintance with men in this city, as you shall be led, and as it shall be given you.
4 And it shall come to pass in due time that I will give this city into your hands, that you shall have power over it, insomuch that they shall not discover your secret parts; and its wealth pertaining to gold and silver shall be yours.
5 Concern not yourselves about your debts, for I will give you power to pay them.
6 Concern not yourselves about Zion, for I will deal mercifully with her.
7 Tarry in this place, and in the regions round about;
8 And the place where it is my will that you shtould tarry, for the main, shall be signalized unto you by the peace and power of my Spirit, that shall flow unto you.
9 This place you may obtain by hire. And inquire diligently concerning the more ancient inhabitants and founders of this city;
10
For there are more treasures than one for you in this city.
11 Therefore, be ye as wise as serpents and yet without sin; and I will order all things for your good, as fast as ye are able to receive them. Amen.
The only thing that could even come close to your statement "Then he is told the real treasure which will come are the people which will join the church" is number 10---which does not say that at all.
And it was wealth
"pertaining to gold and silver " that was promised, not people. There never was
any of that fulfilled.