Sorry not going to happen. AI's can't be in Forge. The reason why is because the AI has no way of knowing if that floor you placed was used as a wall or its intended use, flooring. So the AI would walk on the wall because it's programmed to walk on said object.
Example:
Double Wall
The AI is programmed not to be able to walk on double wall because, then they would stick to the wall. But lets say you put it as a floor. The AI won't walk on it, because the AI thinks it's a wall.
As for Pelicans, I would like them I guess. Scarabs? I don't think it's possible. If we put Scarabs in-game, the disk wont have enough space to put much else. Unless it was Blue-Ray. Phantoms seem fine too.
I want multiple Forge skins. Like snowy, desert, tropical, etc. I also want different colored objects. Not that same dull and gray color that made me want to shoot myself in the middle of creating a map on a slow, boring, and rainy afternoon.
I would also like levers. Activating doors and elevators and such.
Although i kind of have to agree with you about the AI's, 343i could make it so you could change a walls format to a floor, therefore the AI could walk on it .and i totally agree that a scarab would be pushing it. Levers and doors would also be amazing!