Just going to re-post what I said in the logistical support thread:
Currently there is no difference between small, medium and large fields in terms of fielding aircraft and vehicles. The only difference with respect to field size is the difficulty in disabling a particular asset. I propose limiting the number of plane and vehicle types to be in flight at any given time depending on field size. (E.G. The limiting number of fighter aircraft could be 10, 20, and 30 for small, medium, and large fields, respectively). If a fighter hanger(s) is destroyed, then the limiting number is reduced proportionately. Limiting numbers can fluctuate with player distribution and ENY, increasing for countries with low numbers and decreasing for countries with high numbers. Could potentially even be a strat factory that effects the limiting number as well,.
Harder to horde, but harder to defend as well. Double edged sword. I for one don't have a problem with large missions as long as they accomplish an objective such as capturing a base. Just creating a fighter cap and vulching anybody stupid enough to lift off of a capped field just to get a kill with minimal effort is beyond me. To each his own, plenty of diversity in this game to keep me coming back.