All discussions, prophetic and biblical, are fruitless and a waste of time.
If the God of the bible expects us to understand 'his word' based on such things as 70 weeks, wild beasts, faithful slaves and 'disgusting things that cause desolation', he's going to have to do much better than that.
Discussing the bible is a catch 22. One theory is just as easily created as the next is made exempt. Eager so called 'prophets' claim to have the answers, but can you really believe one set of wild interpretations ahead of the next ? To claim superiority interpreting scripture is for fools.
I can hardly trust things I read today; how can I be judged on a book that was written two thousand years ago by men ?
If the Bible works for you, then use it. There may be a bible inside you, there may be a Quran inside you. We cannot say what is right and what is wrong. Therefore, correct and help yourself. To those that stress over the meaning of these things; chill out.