The problem with skill trees is while you make think you're involved in highly intellectual conversation but someone, somewhere is going to be doing all the math and figure out which talents provide the most DPS and then everyone will follow the exact same road.
This is why they remove talent points and give you everything they want you to have and let you choose utility spells. The exact same reason why WoW did it as well. Besides, the wow talent trees are fantastic.
They give you the illusion of choice, but you're forced to follow an exact template or you'll be hurting your raid.