@Umberto67 Thanks for this answer, because it clarifies a lot. I have now read almost this complete post, and copied a lot of interesting links from GitHub, BitBucket, …
I was first confused - I thought that you meant to use MobiFlight (which I can’t, because at the end, I will not use Arduino), but you mean the MobiFlight WASM module, right? I even found the one that FSUIPC is making. So a lot material to dig into and choose from!
I also agree with your remark that Asobo should provide a default WASM module. But didn’t I read somewhere that they are working on some kind of standardization? I don’t find the article back unfortunately.