Noah should've given the three of them a chance to discuss who got what. At least Xande would've gotten what he wanted (probably Doga's role) and then Unei and Doga could've argued over who got the mortal life part.

This in turn could've turned one of them into the main villain instead, probably the one who ended up guarding the dream world, and s/he would've been woken up by some other evil miscreant hoping to use their resentment to destroy the world.

Huh, I suppose it wouldn't have made any difference really.