http://www.borderlandsthegame.com/skilltree/mordecai/#10000000000000000000000
Its a skill tree that was released prior to the game.
I think it would be interesting for SD to do the same. The abilities above all else will customize your character and alter how you can play the game.
Would you like to see something like this
Also please note there aren't any ability trees in Brink. You can choose any of them any time you level up.
