There was a Mega Man War back in the days of 1.6 that never got finished. It was just a gfx/sound/music pack, though. If someone knew how to do the coding, I'd be more than happy to dig up the old remnants of the first project, pull together some resources, and help you put it together. Personally, I'd prefer it being in 8-bit, since 16-bit would be a huge pain. You'd have to custom-sprite MM4-9-10's tilesets, and trust me, it's VERY time-consuming. I lost my old computer before I finished spriting a 16-bit MM4 tileset, if that tells you anything.