It took me over ten years and this thread to realize there're paperdoll shadows in BG

 I haven't been able to find a caster level for cures, unless you put it inside the SPL

Temples cast spells at minimal level, so it's pretty useless if you want to re-purpose standard spells without making fixed-level copies for temples.

So Raise Dead (and Resurrection in BG2) are the only cures available to a dead character - everything else, as you all know, is grayed out. The engine discriminates in just those two cases.

IIRC Remove Curse also has hardcoded checks to be available only when there's cursed item/status on the character.

but another hard-coded feature turned out to be that that only BAM icons for existing spells - the stones that you click in the bar to cast - are valid as custom icons for cures.

Try to end the BAM's name with a "b", it may do the trick.