With regards to SA-1, perhaps if a SuperCIC were placed in a pass-through SNES to SNES board, one could send the correct signals to the key chip in the games? I'm not an electrical engineer (circuits fry my brain), but it's just a random idea that could work.
Probably couldn't be an official adapter even if it did work, anyway, since it would be breaking copy protection and all. But it would be a lot easier than tracking down one of the incredibly rare dumpers that can dump SA-1 games.
EDIT: After making this message I actually tracked down one of the rare dumpers I was talking about... Perhaps I should mention odd dumping devices I still need more often, lol.