I mean,
if anyone wants to try...?
It's also been considered for a possible Libretro implementation, if you really want to go that far. Not sure how that would work, though, considering MUGEN/IKEMEN's dir hierarchy. But if that can happen, then it would probably be easier to port.
I wouldn't mind either, but it's like I was telling
@seanp2500; it's really gonna depend on what version of MUGEN we're talking about. MUGEN 1.0 would be absolutely fine. You can still find content that supports it and it wouldn't be a hassle. I'd prefer the 1.1 beta that leaked out with stage zoom in/out support as well, but it is what it is.
Where you start running into problems is finding content that still works in WinMUGEN, its Linux derivative (which I'm not even sure where that stands in relation to the support that even WinMUGEN received back in the day), and especially MUGEN Plus considering that, from what I remember, the only thing supported even in the more "modern" MUGEN builds was the stages, not the 640x480 screenpacks and lifebars.
If MUGEN was just some random, singular, unmodfiable game like, say, MK vs. Street Fighter vs. KOF vs. Marvel vs. DC vs. Ronald McDonald, it wouldn't be a problem. But considering that a lot of MUGEN's staying power relies upon content made for it, most of which is supporting software made to run exclusively on Windows (and I don't have any idea how WINE interacts with MUGEN, if it does anything worth noting in the first place), what one needs is something that supports everything made that works with the MUGEN 1.1 beta build. The only thing the older MUGEN builds have going for them at this point is using OP characters that exploited bugs in the WinMUGEN's code like Crazy Catastrophe!
(WARNING: very loud and trippy considering the beyond astronomical power on display here of some cringey kid's creations!)
tl;dr - It'd be cool to see, but whoever's doing it would have to understand how MUGEN works and how to make the port to Switch, whatever form it'd take, the most compatible with everything made and that's hopefully still easy to access without having to dedicate your life to a warehouse. (*Gives MUGEN Archive a death glare*)
What are the deets about the potential MUGEN build for RetroArch, btw?