For me, yes, when they announced the whole time-travel thing, I got the feeling that it was a jump the shark moment, I even read the book and I was like... seriously?.
I actually enjoyed leveling in this expansion, and I still like the garrisons, what is ruining it for me is the lack of dailies/scenarios and lack of flying. The ground design is just stupid, obstacles everywhere, don't even get me started on the nagrand design... it used to be my favourite wow zone... Now I hate it with a passion.
I'm not raiding anymore because I don't have the time to commit to it, I think that the game has nothing for me anymore, outside of raids it seems like there's not much to do (and I really don't like pvp). So right now I'm just logging in before work, doing garrison stuff and log out, log in at night, do garrison stuff and log out. :/