That's not really a bad idea, Republic. It would work better if we had more aircraft in AH that filled the holes' in the planeset, especially EW and MW(The allies' would have more choices, for example, but they wouldn't all be spits' and hurris'; You might have to fly something like a Gloster Gladiator).
I think if AH had a complete planeset, your idea would work ok. The real problem with the setup is having to use substitution's, Like our current Pnzr. IVH. It didn't come out until Mid-late '43 with the add-on armor. We need early-war GV's like Matilda's, Pnzr. III's, IVD's, Italian M13/47's, Crusaders, Valentines', M-3 Lee's, etc. for the GV ground game to come close to what we are trying for in the AvA....
I hate to sound like I'm slamming HTC for this, It's really my only big complaint with AH right now. We just need more stuff, especially if the MA arena's are gonna be divied' up by period. This of course, also benefits' the AvA and scenario's, as well.