Hello, another crazy idea here, from that thread:
https://www.arcengames.com/forums/index.php/topic,19151.msg208059.html#newThing is that free for all mode is probably a bad idea for the "regular" AI war mode. However, I imagine from thinking about it after reading that thread that it could bring all kind of new possibilities in multiplayer & modding. However, this "mode" should probably be kept "experimental" and unbalanced...
I've got no clue of how the engine could allow it, but my hope is that thought from the start, it's only a minor thing to change.