Hey, so I ran it on SNES and it's worked perfectly. I tried the whole process again on NES exactly as I had done on SNES and still no bezels. So it seems like the problem isn't the BP but rather something in my NES settings? If it's only NES without the bezel that's not the worst in the world. Still, curious.
editL OK further curious, I ran a few more snes games and not all the SNES games that have a bezel seem to get activated. Actraiser didn't, while Super Mario World did. Is that just par for the course as far as the install goes? My SNES games are all from the No-Intro site so I don't believe it's a matter of naming convention.