Yup, enable keymapping, point it to joy2key. Use the built-in feature on the keymapper tab for your system, and get nice per-game profiles without much fuss. I think a lot of the confusion with RL is just not knowing about it, and how to navigate it. Which is natural. But once you either figure it out, or are shown, it's not that bad. I just helped someone on this forum set up their mame with the nice unified bezel pack for RL in like 20 minutes or so. Then once they watched, it was like, oh yeah nice, that wasn't hard at all.