I don't think it's the interceptor or scatter aces causing the trouble. If I was going to make any changes to the squadron game I'd just get rid of auto-damage abilities and anything that lets a squadron activate or attack more than once a round.
So Mauler/Ten get new abilities, (maybe deal 1 automatic damage to ONE engaged/nearby squadron, not every single one you can touch) and then get rid of Adar, Jendon, and Yavaris.
My gripe with the power of imp squad balls right now is mostly just that MMJ is all the bombing power they need, and they're incredibly self-reliant. Rebel bombers have Toryn, Adar, and probably a BCC somewhere nearby on a squishy flotilla that I can go blow up. MMJ is massive guaranteed damage that doesn't have any weak links that can be hunted.