@zing Well, sure it's possible to dig through documentation and config files, I'm also capable to dig through code, if needed. But that's not the promise of Recalbox, that's plug and play, which I highly appreciate 😉
And when I bring up such a wish I don't expect immediate implementation. It could simply be taken as a "Hey, here is a use-case which is somewhat difficult to solve currently. Maybe take it up for consideration for future development. Cheers!" And you could say, "We don't have much capacity right now, but interesting point!". Instead of downright turning it down...
Anyway, I went through the docs, the various config files, and tried a few things. But I get the impression that reordering might work for libretro based emulators, but is not possible for Amiberry, which is the case where I'm coming from... (Didn't investigate Dosbox yet)
(And as it is a static config in any case, it probably couldn't react on dynamic conditions, like "use starting controller as primary")