Hey Bobby, that sounds interesting, to make a Mega Man style game but with a superhero. If you wanted to do a game for the Flash, a better fit would make it like Sonic the Hedgehog.
The video looked ok, but I didn't get a clear sense of the gameplay and physics to the platforming. I realize it was a fake trailer. The gameplay and level design is always the most important piece. If it isn't fun to play, no one will play it. Just keep that in mind.
If you're still new to spriting you may want to consider 8 bit era graphics, if you're going for a Mega Man style game. That should make it a bit easier to develop stage backgrounds, doesn't require as much detail.
Also, I'm not sure if BOR is the best for building platformers. It's original use was for beat-em-up's. But I hear BOR is very robust. Maybe you should look into Mega Man style systems that let you create Mega Man style games. I'm sure they're out there. That's also Game Maker if you want to start from scratch.
That's my 2 cents. Good luck with whatever you decide to do in the end.
- Twinimage