Remove the 88s? Actually I'd like to see that area of the game enhanced. I see having a team effort setup where a player controls a targeting system and feeds target data to other players controlling the flak batteries.
I certainly feel the priority for field/strat defense should be good fighter cover. There are many times though, for whatever reason, there is no time for a player to intercept a bomber strike before release. I consider the 88s (and flak in general) to be a point defense designed as a last line of opposition. i don't see flaks as griefer tools as a means to inflict damage on others while avoiding air combat. As far as I'm concerned, skilled AAA defense is a form of combat in itself and should be explored as a more immersive aspect of the overall strategic air campaign.
Personally I'd rather face AAA fire from live players than the random scatter fire of the AI. i think it would be funner to attack a target knowing i'm up against a fellow player (be it from another plane or AAA gun) than the coding of the computer; conversely, I enjoy getting shots on maruading buffs hitting a friendly field when I know I cannot possibly stop them from the air.