Personally, instead of a fantasy Ka-50, I would much rather see ED make the Ka-52 with whatever knowledge they can get their hands on.
However, since they seem unwilling to do that, I do want to see the Ka-50 receive the Igla, and FLIR w/ Night Attack capabilities. It's the only attack helicopter that is in the game, and currently, you are dead if a fight jet notices you. At least with Igla's, you can throw all them at the fighter, and run for your life while he tries to avoid them.