Sling load for the Ka-50 is a great idea. Having plenty of fun with the Huey & the Mi-8 in this way.
Some additional weapon selection would be good too, like the R-73 for some A2A defence.
I'd like to see some more of the Su-25T's armoury in the Ka-50, like the TV guided bombs & missiles, after all the Ka-50 already has the "Shkval" TV targeting system built into it.