I don't know if anyone remembers wartools, but basically it allowed you to design your own talents for a class of your choice.
Of course it referred to the old talent tree's we had from vanilla to wotlk, not the basic kind we have been stuck with for cata and mop.
I really hope that next expansion, the old talents will come back. I know it's a long shot, and I know it's unlikely, but the game just doesn't feel the same without them and personally I dislike the changes. I'm not saying that the game is getting worse or that I'm looking with rose tinted goggles, it's just to me, the game does not feel as fun without talents. I don't feel like I can customise my character when I'm only given 3 choices, and seeing as how I'm a rogue, all these choices are pretty damn similar anyway, and I'm hoping that rogues will get some attention in the next expansion.