SMW for advanced
might be interesting if you did a Luigi run; Luigi can jump higher, and can have Yoshi not eat as many enemies; for instance Yoshi can spit a pipe pyranna an enemy to kill it. I don't think it would be worth it until SMW runs become as near perfect as the ones for NES/FDS, it would be more of a novelty run, like Peach in SMB2.
Klonoa might be interesting, since the levels are built for routes based on using enemies to get to hard to reach places.
Blender Bros. is like Pokemon meets platformer, but it seems only a few of the catchables will be usefull in a time attack.
Um, damn, I remember their being alot of querky 'lil platformers when the GBA was new. Spiro: Season of Ice was nice. Banjo Kazooie didn't suck much. Pinobee does suck much, but that might be ammended with save states, don't think it would look good, though. Perhaps better than the Micky Mouse games published, but not actually good.