1.) Quality AA guns on base walls. I don't know how many times my squad could've taken down a Gal but we don't have any weaponry to hit that high. (AA MAX range only goes so far.)
2.) New bunker/wall layout. Poorly placed, no point if poorly placed.
3.) A kind of "jamming" device against homing missles. Maybe on MAXs or buggies/assult buggies, it could be an implant or an in-board thing. If it was implmented it could maybe slow the vechile a little? Just for balancing purposes.
Well that's all my ideas
I can't wait to see some more.