User blog comment:BigBrother1984/Borderlands 2 Skill trees/@comment-2197645-20120904175918

They may actually add in new skills into the trees, if and when they raise the level cap. Thus giving the characters (particularly Maya and Zer0) even more skills and gamechangers.

P.S. I dont think Maya and/or Zer0 will have a problem keeping up with the other characters. ;)