@Sally we have a leading point made by Koshi what we should do. He discovered a way to stabilize Discovery on linux working to a perfect state equal to Windows according to his claims.
At some point i wish to find a time and replicate and update guide to what he discovered.
Planning at nearby week to try it all
I tried using a 64bit prefix with mainline Wine but Freelancer vanilla refused to launch with exit error code 256, I didn't test Discovery though as I assumed it'd be the same thing, but it's worth giving it a try to see if these crashes can be dealt with.