Congratulations on the release. A full SM64 hack is impressive. I've been considering getting a N64 flash cart, this would be great for that. I think the only thing that could be something for you to work on (for future updates if you plan on any) is that the level design looks to be pretty spread out, the result could be the feeling that you're "forever running" all of the time to get anywhere, or that the levels have a general empty feeling to them. Maybe there's a way to scale the level design down through some automated process (if the scale is in fact an issue).