the (B) Namespace
My only thoughts on what any of these would actually be are...an undead equivalent of a 'good god' (defensive abilities, helping in hell or heal self; though with immunity to torment they don't really need the hell help.)
a god that provides water magic or helps control dungeon features to have more water (would be really helpful to Merfolk that get EV boosts thereof; and somewhat helpful to Octopodes (everything else stumbles you don't...or a lot of things CAN'T REACH YOU; [if deep water]))
a god that defrays spellcasting penalties on heavy armor and gives racial (elven) drops of heavy armor. [it IS possible to cat even level 9 spells in CPA as is, with enough INT, STR, Armor and Spellcasting skill. At 27 (all skills) and 15 STR/15 INT you get a 17% fail rate on fire storm; chei or demigod level stats can get it down to 2%; a god specifically to help with that could do more...especially in protecting the fragile Deep Elfs.]