Perhaps just better counter measures for the ones they have.
That's what I've been thinking. Outside of the U.S and maybe Israel, not many nations even practice going up against air defenses. Time to go back to the basics, load up the chaff and flare dispensers, preprogram the DDS dispensers, and on top of that run a few Iron Hand or SEAD missions on their side of the border. You need to keep the air defenses guessing as well.