An early ideas of the extent and variety of content?

I'm hooked on the gameplay, atmosphere, pvp and more but everything points to this game being extremely repetitive. Does anyone have better info about whether the game is more diverse at launch? I heard something about the enemies being the same in later zones. There is a trend in the industry to polish the first hour of the game to tailor for reviewers and pre launch events. I'd hate to spend $80 and be 20h in and wishing I didn't.