Okay, here's a fun example of 'different' then.
Here we have an EQ2 Fighter (warrior) Guardian.
http://dl.dropbox.com/u/35156/1.png
This is their 'overview'
http://dl.dropbox.com/u/35156/2.png
The bottom are AAs, there is 4 AA trees. (Alternate Advancement)
AA essentially acts like a talent tree gained on a different exp level.
Now... however, EQ2 has the issue of 'not catering to the casual' or 'this is waer;alkjwerlakwrjwa weird' No one wants to play that.
http://eq2.wikia.com/wiki/Guardian
For well... that =\
Now... I don't mind playing with a set keybinds from shift1-6, 1-6 hfvgzxct, ctrl1-6 alt1-6, cause I have before, but remember everyone else is not me -.-
Note EQ2 was technically released earlier than WoW.