If you're going to do anything with the 234, take out the tail gun. Sure, it's historical, but it's almost never used for its intended purpose - defense - and the way it is used is terrible for game play. There's little I find more irritating than 234 pilots who fly around deliberately trying to get people on their six so they can kill them. IMHO that's absurd, dweebish, and unrealistic above and beyond anything else anyone does in this game.
(For that matter, I'd be happy to see all jets and the 163 taken out of the game, but I realize a lot of, maybe most, players would disagree. But if I wanted to fly in or against jets I'd be playing some other game based on modern fighters.)