It might be pretty drastic, but enable a few plane types (say, hurri2D and il2) at vbases. Leave the V bases as being independent of the strats. Lots of choo choos steaming around shooting people and resupplying. More convoys, more resupply barges, etc.
Now, theoretically, everything has a dedicated role aside from flattening hangars or vulching. Ground attack to deal with convoys, trains, barges, in addition to GVs and toolshedding. Bombers for the strat targets, goons/M3s/Jeeps to resupply all strat, not just HQ. If stuff has to get blown up in large quantities, that means bombers. If bombers need to get blown up in large quantities, that means heavily armed interceptors. If interceptors need to be blown up in large quantities, that means... furballing for the war effort!
That sounds kinda nutty.