Ideas:
1.) It would be nice to have each map variant to come with a clean slate that way anyone can build their own way without having to search the whole map for everything.
2.) Another Forge World. Something like Forge World V2. A larger map, keeping the more popular things like the canyon and waterfalls, and adding a larger variety of natural areas. Like deserts, forests, grasslands, and arctic areas.
3.) If the Falcon is kept a chaingun should be added for the driver, as in the campaign. This would keep banshees from completely destroying them.