I found a pretty humorous glitch with this hack. I died the first round to the Omega Metroid, and upon getting back to its room for a rematch, it was just a floating head, which proceeded to blow up upon arrival. Game cleared. XD
Enjoying the hack, ran across an issue. If you go to the missile room on the way out of Sector 2, the first green barrier monster cannot be passed on the way out if you go into the room and it is raised, so I'm stuck and have no choice but to die and go back to my last save. If I'm missing something, I'd be happy if someone filled me in, but I think this might be a lock.