Just hit 100. I've enjoyed leveling through these zones and the garrisons are a nice change. Keeping things fresh. I was not originally sold on a time travel/alternate universe expansion, but they've made it enjoyable.
Ugh. I HATE the time travel concept, but the game-play is good enough for me to ignore it.
Other than garrisons looks like all problems almost fixed. Just don't use garrison heartstone and you'll be fine. When you do it teleports you in a garrison with 466132 other people.