I think it's very likely that Ilberd will do something idiotic in the name of Ala Mhigo. I think he also stands to seize control of the Ala Mhigan resistance - which will put us at odds with Yda and Papalymo if they get involved too. This would make there be more room for intrigue and depth in a potential Ala Mhigan expansion since we'd want to eliminate the fanatically loyal Garleans and the fanatically loyal Ala Mhigans. Both will no doubt risk the lives of innocents in the name of their respective causes and at this point Ala Mhigo is full of both Ala Mhigans and Garleans - many of which may very well be friends.

Or at least I'd hope that would be the case. When Rabanastre was taken over by the Archadian Empire there was a lot of tension, yes, but many citizens came to admire, respect and even befriend the Archadians in the process. It certainly wasn't black or white and I hope the situation in Ala Mhigo isn't either.