Don't know that I'd like this. I think its too quick and easy a way to shut down an airfield. Run a couple buffs loaded with 100lb eggs in a crossing path over a field and it would be pretty much out of operation. One formation would work as well, providing you don't mind looping back for a second pass. It certainly would be a good use of area bombing, although I doubt the intent was to make field supression easier than it was before. It would be with craters active imo.
That's not to say the idea should be discarded outright. I think one would want to make this a bit more involved and put in place some dependancies. i.e. X and Y (factories perhaps) need to be destroyed first before crater repair time goes from, say, 30 seconds, to 5 minutes, as an example. As long as X and/or Y targets require a concerted effort as well. Just thinking out loud though. The only dependancies I can think of would first require a much different layout to the present strat model and the objects within the game space.