The similarities between the Vulture and an A-10 ended as soon as you stepped in one. You spent more time reloading the bloody chaingun than firing it, it was only good for finishing off damaged vehicles. The bombs had a tiny AoE and fell so slowly that it was very hard hitting even slow moving targets while flying at minimum bombing altitude. The only useful thing it had was the afterburners.
As much as i love the A-10 (it's by far my favorite US plane), i think that something more geared toward teamplay would benefit the game more... For example, if 2 seated reavers are still in, a variant focused on tank hunting, or maybe a liberator variant specializing in focused surgical strikes, just anything requiring 2+ people to work in a team instead of a flying solo pwnmachine.
Regarding MAX size, i think they're just fine in PS, remember those thing need to go inside buildings
