You have to give it to them though. Designing that much crap for a game is just amazing. If you have 1,000,000 things to design in a game I'm sure you'd reuse some models to save time. With that being said, I'm glad they take the time to make the high level stuff new models. I'm sure if anyone could come up with one good idea and posted it they would more than likely implement it. I was the guy who knew everything about my class and everything related to it when I was getting in my t1-t6, but Just seeing all the content they have put into these games is to time consuming for me. I can look through it on MMO over a few days, but that doesn't do it justice for the amount of work put into it.

They also typically add more models into the game at the release of the patch or xpac.