Speaking of Mario 64, any chance Surreal B5.5 will have support for more of its rom hacks? Perhaps these:

Super Mario 74 is the best one out now. Well, the 100 star 'demo' at least - the final game should have 150. Tried to get it working in B5.4 to no avail.

I've gotten Kaizo Mario 64 to work in Surreal, but I think it shares the same rom header that Mario 64 does.

Monochrome Mario 64, which was recently released.
And in the future:

Super Mario 64: The Star Road. Judging by the
videos it should be the most polished of the SM64 mods when it comes out.
I would also love to see all the Goldeneye and Perfect Dark Hacks working. I have the problem of Surreal recognizing each hack as a completely separate game. I would like to see them all recognized as the same game. That way you don't have to beat the entire hacked rom to get to the point of the actual hack in the game. I've messed with it before for hours couldn't ever fully figure it out.