Mega Man is the best, and now even better!!!
This is awesome being able to not only explore the first Metroid game with Mega Man but to also get to fight Samus as if she was any other boss from a Mega Man game. You should redo this game by upgrading it to Super Metroid levels with enemies and Samus from that game and Mega Man from Mega Man 7 spires (also for SNES). This would really enhance to look of the game. Also make more games like this with Mega Man in a Zelda game such as The Adventure of Link which is the only side scrolling Zelda game and have Mega Man fight through the palaces to fight Shadow Link and then Link himself. There are a ton of possibilities with this type of game. I only wish I could do it myself but I don't know how to do flash or other such animation. Go for it!!!!!