I guess this makes sense:
Warbirds was a big success for more than a few years, so this could work too. But...but...it needs to be better thought out than what WoT has delivered. I mean, if we are going to be forced to play as mixed teams again, well...this isn't gonna work any better than WoT. Either commit to your WWII / Cold War setting, or just go sci-fi or with some other made-up setting where you can ignore reality to your heart's content.