Be care for what you wish....as it may come true...as in the past ability to limit (pork) fuels at enemy airfields (which, by the way, limited the range of certain aricraft such as the LA-7, making them less of a threat overall and we didn't need an ENY limiter). The obvious result of this past wish is the importance now of denying enemies the ability to bomb your resources (take out the ordnance), and their ability to capture your fields (take out the troop barracks).
Another consideration is the time zone in which you play the game. For some who log on during prime time USA, they may see "hoardes" of folks online....say upwards of 300, or so. For others, who play at other times... for example, very early morning Pacific Times Zones... one may log on to find a total of 60 folks online between all three countries. For these folks, a "hoarde" may be 5, or 6 folks, and of the 20 or so players online in your country, some may be furballing, some may be GV'ing, some my be in Bomber mode, and others in PT's or attack mode.
Increasing the difficulty in capturing fields by requiring more C-47s, or increasing the amount of ordnance required to drop various targets may make game play more challenging for an MA of 300, or more, players, but, may also make gameplay less enjoyable for those who play when the numbers of players online is quite less. It's not easy to acheive a balance of gameplay enjoyability and gameplay difficulty...just my opinion...