I had an idea. With WhiteYoshiEgg's overhead view thing that came out for C3, someone could make a Mario Party-esque hack! Of course, some big expansions on the system would have to be made, but I'd say it's feasible.
I just thought of a way to get more custom sprites into a ROM. You know that "ASM pointer" window in Tweaker? Well, what if you changed the sprite pointers so that they all went to the same place...which JSL'd to some free ROM to an all-new pointer routine? You could do any number of things, including replace the unused sprites with real sprites, but...what if you made all of the sprites that don't already use the extra bit use them? You could potentially have another C8 sprites! I don't really know how sprite numbers beyond C8 work, though...those might be slightly trickier. But if anyone got them to work as well, we could even use the null sprites with numbers F6-FF.
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I'm working on a hack! Check it out here. Progress: 64/95 levels.