Traveler, the problem with this (and all bases, but V-bases in particular) are easily bypassed and left to starve from lack of support (a V base won't get any air support if there are 2 enemy air bases in the way. Also, once the hangers go down, what you see around you is what you have; no more supps, and no more tanks).
That has always been something I would like to see resolved, but I can't think of a way to fix it without objectives and flight restrictions like in a scenario, or without adding massive belts of flack batteries (say, as many guns in the strats all crammed into the same square mile, 2 miles deep) in between the area you want to block off.