I don't know if this has been suggested, but I think there should be a customizable Guy's for cave rooms. Have it in Graphics->Sprites->Guys or Quest->Guys and gives you a list of current guys to edit with and allow you to add new guys to the list. It would have a guy tile and a field to edit/add names to it.
Customizable "Guy"s for room types
It would be nice, however this is so small and easy to script, this one is covered by the included header Classic.zh via the script ChangeRoomGuy. Room guys are a bit of a mess internally.