Cheater, that is a ton of questions. If you want to go through and prune the ones that are already answered (such as the “buckets” releases of content) and add it to the OP have at it. Also stuff should probably change to “is” rather than “when”. Like they may very well not even have a beta/alpha.
And reverting the warrior threat stuff to pre 1.11 would not be a change outside of the vanilla timeline. It would not be “balancing”, but rather a reversion to a prior state.
If you want to pretend that the intent of the guy asking the question was other than asking if non-vanilla balancing would be taking place, enjoy yourself.