Great job you are doing with Batocera linux. I started with Recalbox then I discovered this fork project. I appreciate the job done by the original Recalbox developers and also I understand the raison d'etre of Batocera.
I don't know what is the state of affairs with Recalbox, but it is possible to integrate in Batocera the following feature from it?
This is specially useful for SNES games that detects multitap and don't start with it. Kirby's Dreamland 3 is a good example. This is why the Recabox guys made this patch.
Thanks again for Batocera and the philosophy behind your fork, I'm following it closely together with Recalbox. I hope one day both projects can end in a unified system and everybody is happy with each other's contributions.