[1] Though the game allows 8 player battles for Carrier based skirmish maps against the AI, it does not allow the same for Spaceport battles. I set up a 6 player Spaceport battle using the INFRASTRUCTURE and also tried the SPACEPORT setting in the editor [2 vs 4] against the AI and what happens is that the AI will build out of only one of the Spaceports instead of each Spaceport building separately, like the way the Carriers do.

Once that Spaceport is destroyed, the AI will switch to the next Spaceport.

So the only way to have multiple Spaceports building separately is to have a scripted build command for each Spaceport with a large Manpower supply and set it on a scripted loop timer so each that each Spaceport can build what ever you want like 12 fighters and 2 frigates every 3 minutes, and it will keep doing this until that Spaceport is destroyed.

I know how to set these scripts up, but it is just a bit of a pain.

[2] Someone once at the old forum said you could watch the AI battle itself by going into the editor and unchecking the box CAN BE PLAYED and setting the AI to FULL, but I've tried and this doesn't work.