I am intrigued by how you picked Tremoria as the deserty place... Too bad you're wrong
(it's actually DINOSAURS! :O) I'm also curious about which continent you think is Tremoria. I'll hear your thoughts on it, though.
One possibility might be to detach Time from the aligned planes, and make it an "Everywhere" being. Then I can have my cake and eat it too - Father, Mother, Death, Knowledge, Love, Creativity, Trickster, Nature, Violence and Time over all.
Oh yeah, Kokopelli's great. In fact, I made a dungeon 'specially for him which was just meant to be a side quest, and now a little bit of the god himself is literally coming along with the party in the form of an intelligent staff and at least two characters seem to have basically converted to him.