If it's not to much to ask, allow us to import character face pictures. That probably requires an overhaul of the system you originally used, but you'd probably want that done for the long term anyway (I think?)

I also am going to second the person that talked about looking at the NWN 1 and 2 editors. They were pretty user friendly. You might also want to look at the Dungeon Master mode if the Game Master stretch goal gets fulfilled as well.

Item editing sucked in the original. Also the contents of chests and such. That was kind of weird, again, look at how NWN's editor handled that.