Fixes due to platform changes which break older missions only happen if there are still potential sales for that product. The older the module the less likely fixes are, thus Ka-50 gets practically none. The AI is bust, Shkval doesn't see illumination rounds,etc. A Harrier module will still get fixes because it's still being sold.

The BS2 "dynamic" campaign is pretty awful. The linear story one is pretty good. There's only one A-10C campaign and it's dull as toast. It's JDAMs on static tanks from 25,000' with no time limit.