I'd love to see it happen but its really not a big issue. There are so many options within the planeset (with more coming {p-39:aok +??} that anyone who wants can find a good secondary ride.
I think the only way to alter the plane dynamic would be to have variable loadouts so not every plane was available at every base. The Eny does the same thing based on country #'s....but what if the further from your own HQ the base was the more restricted the plane set. Or on a captured base the plane choices "ramped up" over time with higher # eny planes coming "online" 1st. Guys could hotpad there rides but attrition would limit the "base rolling" just a bit possibly.
