So I was reading the Wikipedia Blaster Master article when I saw this little bit about Sunsoft's original announcement of Blaster Master 2: "At the 1992 Winter Consumer Electronics Show in Las Vegas, Sunsoft announced that they were planning to develop a sequel for the Super Nintendo Entertainment System, but it never came to be."
Well, interviews with Software Creations staff made it pretty clear that when they were hired, the game was always, and exclusively, developed for Sega's console. Sunsoft must have done some prototyping of a Blaster Master 2 for the SNES before they decided to outsource to SC for BM2 on the Genesis...that makes me wonder if there is a lost "Super Blaster Master" proto (or even further along) shoved deep in the vaults of Sunsoft somewhere, and what the game would have been like if they had developed it for SNES.