It was intended but it never got them ... this is why you see a bunch of switches in the 'pit that are not functional. Some experimental Ka-50 versions have it, but those are Kamov Ka-50's, not army Ka-50's ... they are not in service.
A lot has been discussed. Exactly what will happen isn't clear, but I doubt they will add a lot of things to the Ka-50. Interoperability with A-10C in a working environment isn't very realistic, and given that they've gone as far as to remove JTAC from red side, I don't think you'll see interoperability in terms of systems.
You have to do things the 'long' way, ie. coordinate input by listening to radio etc. If the two ever worked on the same side RL, this would be a realistic problem. I don't see why you wouldn't want to simulate a realistic problem in DCS ... and I don't see why the choice should be given to avoid it, either.