In the Early war arena - up to say, end of 1943, you could perk the hot 1943 vintage aircraft like 190As and p51Bs, but then p40s, hurricanes, 109Es, buffalos, gladiators, bostons, stukas,etc. would be usable.
When I say perk , I mean modest prices like
say, 15 or 20 perk points.
Only downside would be the splitting of numbers of online players between 2 arenas.
Just a thought.....