Id love to play in skirmish mode with the ability to use glorious Synchronous commander AI's and play against some filthy Foundation AI's. Scummy Legionis Machina and vile Revenant would also be acceptable
The GW AI's have preferences to using different unit types. The Revenants prefer Orbital, where as the Legionis like Naval, the Foundation Goes Air and the Synchronous like using bots. As far as my memory goes.
You should see their boss battle, especially if you have commander upgrades. Truly the easiest battle.