Perhaps you could add the ability to organize the lists by using folders.
I should also be able to move different actors to a folder.

Also, not putting the different clones on the actor list (and figuring out a different way to select different actor clones) would be really nice.
By the way, I like what I see in GE so far.
GE may end up being a great game design tool.
It might even beat Game Maker!
