Last night I joined a base take effort that was being thwarted by LVTs from a TG parked offshore.  It went on for a long time with plenty of air-air and ground action.  
Then, I noticed a friendly base on the other front that was WF and had no friendly spawn.  No enemy aircraft there, but a stream of GVs who had already killed the VH, ords, and radar and had camped the field.  I joined the 2 guys defending and spent 10 minutes circling the town in a light fighter watching for M3s and dodging Wirbs.  Fun!  Then a few enemy aircraft showed up to pick the defenders on the deck looking for GVs.  Combat!
Bottom line, there was more air-air action at the "stalled" base take than defending a base without resupply.  There's no guarantee that nerfing M3s is going to produce air combat heaven.