I can see the I-16 for sure, but the Brew, I'm thinking no. At least the I-16 can ground pound a little with her rockets in defense. Track a tank can make the difference. 
But why only at V-bases? Why not at ports as well? I know you mean for some v-bases, and this can be so for ports as well. 
During the alpha I tested the runways on the new objects extensively. The best vBase to enable a fighter for is the 1x1 mile with the asphalt runway. The port, I could just get the Am6 family on 25% fuel up or the F4f. Landing, Waffle placed a tree right where you need to be low and very slow to stop on that short runway just at the hanger. Otherwise you end up in the water past the hanger.
The I-16 and Brewster are a logical compromise to give you something to up with but not turn a vBase into a forward airfield 3-6 miles from another airfield. The minimum distance for locating airfield objects on Melee arena terrains is 19 miles, with at this time a specific exception for 12 miles. Granted I was worried about the 16in guns on the battleship when Hitech asked me to put them out of every port on my terrain, my fears were unfounded. It's taken almost a decade to see the equivalent of a mini forward airbase with those two planes enabled. I suspect Hitech is now allowing it to be real time tested for unintended consequences as it is for awhile.
Maybe a new rule for base placement of 12 miles from the nearest airfield, port, or vBase to have a limited few more planes enabled with the I16 and Brewster along with available ordinance. And no rearm to limit you a bit so vBases don't become a mini airfield with 3 vehicle hangers. Make the most powerful bomber you can get out of one the HurriC with 2 500lb bombs. The more plane types you allow to up increasing the ability to destroy tanks easily, the more you remove the purpose of a vBase and punish the paying customers who GV. Then you will get some genius in a box of bombers flying over every 15minutes killing the fighter hanger. As is, if only a HurriC with two 500lb was enabled, curtosy wirbles would swamp the nearest enemy spawn while tanks would make sure to camp the runway from long distance just to pick the spawned in Hurri.
