Mono relicensed under MIT - C# for UE4 can come back?

I never programmed with Haxe. But I like the look of it. Though I would feel better if it was on the marketplace and not just on some Github. Seems Haxe comes to a “one language to rule them all” quite close. It is a language, but it doesn’t seem to have its own runtime? But gets ALWAYS compiled/converted into another language. Kinda cool this idea, and it seems even to work.