Is there a way to remove factions from being picked in Random?

I have a mod that breaks Mongols, preventing them from even spawning at the start of a skirmish versus AI (the mode I play almost exclusively). Does anyone know of a way to remove them from the possibility of selection when using random? I only ask because I like not knowing exactly what I’ll get, or who I’ll be up against, so manually picking all the factions sort of kills that. A minor nitpick, to be sure, but any help would be immensely appreciated. Thanks!