2 sides will increase uneven sides,
Not reduce them. With the classic 3/4 country main arena set-up, no more than 30% and usually less than 10% of players online will be stuck in a hole. If you change to two countries, one entire side will be squeaking when it becomes uneven. This has been proven many times, take the latest example, WB's WWII arena. Axis vs Allies in a historical arena, sounds great doesn't it?
It's a mess. Constant squeaking. Allies have the best planes, and so most of the players. Scenarios are the only way to limit sides. Main arenas need at least three countries, and I believe 6 would be even better. Switch sides if dweebs won't finish ya off, and do it yourselves! Be proactive, because whining about numbers always looks bad, imo.
Cya up...Braz