As I write this, Asobo is struggling to publish SU15 after several delays. It seems that at least one of the difficulties is a WASM problem related with the instrumentation.
To add to MSFS the simulation of modern military avionics, electronic warfare, radars, countermeasures, thermal signatures, missile fliying dinamics, etc, and the cross interaction of this systems in multiplayer to MSFS may be theorically possible but, nevertheless, a huge and tremendously complex task.