Edited* Perhaps I was a bit hard to understand. What I meant is that with more skills, will there be one or more skills to put up for a game. Perhaps one that unlocks after a certain amount of skills are gained, or a certain achievment or level reached. If there are more rooms with harder monsters, all there is to get stronger is items. So I ask, why not one(or more) more skill slot(s).
I would be quite happy if we could just do something with skill points once we finish off our skills chosen. Perhaps putting the points into generic Warrior, Rogue, or Wizard slots for the normal benefits with regards to stats and health/mana. This may be all but required to not make those of us who are completionists go insane when CoW is released to taunt us with infinite unspendable XP.