Hi! First of all I'd like to thank You Mnemonic (and all people who helped U thought) for this beautiful engine. It's one of the best (i know, i try ed hell a lot of them)
My suggestion is create template system (like in 3d Game Studio for ex.) so anyone could select game type like action or adventure (it's possible to create Resident Evil style games right?), character behavior (npc or enemy), "default door template" for example, etc. This templates should really simplify scripting process (and of course make it more faster) and will give more possibilities for game creation thought