Would be cool if you could store your actors in a library, and to place instances of the actor into the game, just drag and drop them into the list (not unlike the libary in Flash).
A database that lists events next to their corresponding actions
Global search and replace in the script editor
The ability to edit actor names after they have been created!
The ability to add or subtract from between path points after they have been created, and also to label a frame duration for each node on the path.
Oh I have so many suggestions...