YK,
1 - True, the WTS does not claim apostolic succession. But they do claim that a close-knit band of anointed worshippers have comprised an unbroken succession of the faithful slave class. You did not address the meat of the issue, which is: who were these anointed worshippers of Jehovah prior to Russell in the 19th century?
2 - You did a good job dealing with Deuteronomy, but you leave out the fact that the term "god" in scripture is a term of authority. Moses, kings, judges, even Satan are called "god." Jesus derives his authority or godship from Jehovah.
3 - I believe the issue being raised is that it is difficult to say one aspect of the 144,000 is literal (the number) and one is figurative (their identity and origin).
4 - Changes since Russell's day include the scope of the ransom, the destiny of the great crowd, the importance of character development, the issue of universal sovereignty, the Abrahamic promise and the restoration of Israel, and of course the authority of the WTS. Big changes, these.
5 - No arguments here.
6 - How would you know how many are DF'd for apostasy and to what extent their disagreements with the WTS amount to? I would suggest the opposite of what you claim is true. Most ex-JWs were stumbled over one or two things, not the whole kit and kabootle.
7 - The two-class system is a difficult one for JWs to defend, especially when determining that few if any today are called to the heavenly calling. However, I do see reason for suggesting that some would hold higher positions of responsibility in the Kingdom. Yet, Eph 2:6 is speaking in past tense, and it seems to me that such verses which speak of a "heavenly hope" are not referring to people leaving this planet to go elsewhere. "heavenly" means godly, and the Jewish notion of a "heavenly hope" means simply that their reward or destiny is based or stored up in heaven, but will manifest itself on earth. (the New Jerusalem descends from heaven, Abraham's destiny was for a heavenly city as per Hebrews).
8 - Hard to argue with you here since the Bible has so many different statements about God's people and their struggles that applications are plentiful.
9 - Trinitarians do believe that Jesus is Son of God. You didn't say what Thomas might have been getting at other than to say 'apparently Jesus knew and that is good enough.
10 - I think the NT is pretty clear that Christ would return literally and visibly (some statements are obvious exaggerations). Matthew does not clearly define what that sign is, and so any interpretation is speculation.
11 - I think it is probably not a good idea to base doctrines on the book of Revelation. When I read the gospels, I don't see any indication that Jesus thought or taught that anybody would go to heaven (Matthew 5:5). Paul never made any such explicit statements. And certainly nothing that occurred at Pentecost 33 would have changed anyone's minds that their destiny was to be in heaven. In that light I struggle to see anything in Revelation that says anybody should be there after a human existence except in highly figurative passages such as serving him day and night in his spiritual temple.