I agree, but there should be an alternate non-ultra ending. I don't know, maybe the CK takes the orbs to the gate, and Andor tells him that it will be easier to safekeep them that way and names him the general of the chaos hordes. Or the CK follows a different chaos god, and getting into D:50 allows him to summon that god that will enter the chaos plane and kill Andor. Or something.
I'm sure TB can come up with a good plotline, but the fact that there is no non-ultra ending is a pity. Some of us don't like to do ultras because of their length, scumminess and strange alignment changes.
Yes, and it's not only chaos god, but it's only ultras (I can give you more details, but maybe you don't want to be spoiled if you haven't read CK spoilers yet).