WELL IT LOOKS LIKE THERE ARE SOME COOL REWARDS! None of them are power based at this moment. For saving Halsin, you get a
. I suppose you could argue that killing Rath gives you the
but you receive that if you help Halsin too. It's not much in the way of power though the knowledge gained may be equivalent. Becoming a Priestess' consort in Menzobarazan would fall under my projected evil description, assuming it bares fruit.
I'm simply saying people are underestimating what evil is in favor of immediate gratification, which by the looks of these posts, is tied to power.