Of course the difficulty I have with most reformation groups, is twofold.
That in seeking to eliminate the lack of unique interpretation in scripture, they add to it with "articles" (anglican) confessions (various) - and if you take (for example episcopal articles) a massive wedge of "sermons"they are shoring up the deficiencies in sola scriptura, the basic principle is defied by the addition of those uninspired "confessions" "prayer books" "concords" "articles" So defeating the object. So rather than empowering all to interpret scripture, it empowers denominations to add to it with many variations of "confession".
And...
I welcome the fact we both believe in real presence, but only you can answer...this when Luther clearly renounced his source of apostolic succession and authority, did he ipso facto renounce the succession itself, so is a Lutheran Eucharist valid? For you not me to answer.
At least Catholicism is open in adding a well documented catechism which encompasses the teachings handed down from ECF, and councils, and makes no pretence that scripture can stand alone, indeed it specifically states the deposit of faith was handed down by word of mouth and letter, only later did much of it become scripture.
On the final point, I cannot agree.
Let me use an argument reductio ad absurdum. About "silence" in scripture. I do not know if you have noticed but, There is literally nothing in the OT , about the worship practices of the temple. And by the same argument you now use, therefore no worship was mandated since it cannot have fallen from scripture.
Indeed..going one further, about OT analogies Jesus refers to the teaching from moses seat ( we maintain the forerunner of the cathedra of peter) in which clearly the pharisees were teaching truth by paradosis, and Jesus stated because it was said from the seat they had to listen! So fortelling the importance of authority. And the verbal teaching alongside scripture.
Anyway , I doubt we will agree.
But an interesting discussion.
Like Luther, the "Doctors and Fathers" of Lutheranism recognized the issues expressed in the "milkmaid" statement; which resulted in what we call the "Lutheran Confessions", "Concordia", and the unaltered 1580 edition of the "Book of Concord"; which defined Geneso (genuine or orthodox Lutheranism); the period of time between about 1580 and 1700 is not known as "The Age of Orthodox" for nothing. Most Lutherans today are not "Confessional"; those Synods that are (mine included) still adhere to the unaltered BoC.
One should be looking to the BoC to explain our theologies rather than musings and random quotes.
Today, only those with no understanding of faith would argue that one does not need a "purging" (purgation) before entering heaven; but not a place of prolonged retribution.
Things that you find vexing regarding Sola Scriptura, remember the concept of Adiaphora; things of indifference; beliefs and practices not supported by Scripture that neither conflict with, nor are forbidden by Scripture may be retained. Things that are explicitly commanded by Scripture must be followed.
We we may pray for the departed, but they are not our middle-men.