Make sure the checkbox that says "Only show factions that fit this map" is not checked. It should show all factions. I've seen it showing zombie factions and halo factions. If it doesn't show them, let me know which mod it is and I'll see if there is something I can fix.

Is there a list of compatible factions with these scenarios? I wanted to try and use star wars factions but they did not appear so I assume you have to add each faction to a list?

It was much easier. I should be able to use vehicle crews in the vehicles though. I'll add that to my list of thing I can add.

Is there a reason ai units are chosen randomly? I would prefer if you used the pre-made groups/pre-defined vehicle crews.