I'm just not comfortable combining all of the barbarians into one huge faction. Even if we had Illyria, they would be the Illyrians and they would have Scodra, Siscia and Salona. The Illyrians were not a big time player in the scheme of things, they raided and were taken care of rather quickly by Rome. Also in RTRPE I don't remember the Illyrians being a popular faction to play as. It's just better in my opinion to combine them in the Free tribes faction. At least give it a chance guys, we have not even tested anything out yet.
When we test, if it's not working well, by all means we can make a change. This is the BASE campaign, it's not a final work. When everything is said and done, every single faction will have it's own mod foldered campaign so nobody will even play the Base imperial campaign. This is just going to make our work easier when we make the mod foldered campaigns. trust me, there is a method to this madness.
Simple: Gallic Tribes. Germanic Tribes, Geto-Dacian Tribes, Scytho-Sarmatian Tribes, Iberian Tribes. We could also use Peoples, Confederation etc