Sure, I can play Arco, unless someone really wants it
All other nations [except Agartha] look fine enough. I can even play last unpicked one.
Abysia is not so one dimensional. Sure, big part of it is, but it's great at what it does. Burning Ones are one of the best sacreds around. Warlocks are great mages and give you blood and tough communions. And you get EDM for Zmeys, Ember Lords, etc. You can afford dormant rainbow with E9. And you get 120 free design points.
My game was a bit weird thougj, I had Ultimate Gateway and I was fighting Lanka with blood40 site for victory. So insane amounts of summons on both sides.