Regarding the pruning and class changes, ignoring the fact that some is indeed needed with the current state of the game - there is simply way too much clutter -, in the end, all depends if these are good and not overdone. I do know of a MMORPG that, in my opinion, overdid these.
So I'm cautiously optimistic. Worst case scenario, I stop resubscribing every once in a blue moon to run through the new content I missed.