I feel the game is in a decent place right now, especially compared to the older expansions (except Wrath/TBC). This one really feels "complete", mind you it didn't really have much to compete with for the past few years at least.
Come back, give it a try, if you don't like it you're out a few bucks or gold if you have that much for a token!
I've been playing it basically since TBC, with a few weeks/months off here and there due to life stuff..but for the most part this expansion has really made me feel good about it.