One of my earliest ideas was a "Queen Wasp", a bigger, faster, more deadlier Wasp which could compete with the Banshee and Phaeton on even grounds. But since the Hannibal Wasp more-or-less fills that role, my favorite suggestion would be the "Mosquito".
Essentially a smaller, more skeletal Wasp, the Mosquito trades out energy shields with an Active Camo generator. It maintains the Wasp's firepower, but requires greater emphasis on stealth reconnaissance and hit-and-runs. The skeletal profile combined with the Active Camo generator makes it very difficult to hit. However, the thin armor and lack of energy shields makes it very vulnerable to loadout weapons and anti-vehicle weapons will outright obliterate it.
Still, I believe the Mosquito can live up to its namesake: an annoying pest that is difficult to track and stings like a #$*&@, but can be easily taken down once found.