were some of those modes 24 bit?
Nope - all were 16 /32 bit modes (I think that those I can't see are also).
Jumping up when on the moving platform is because your inertia is still moving in the direction of the platform
Well... ummm. No. The player moves with the platform EVEN when the platform changes direction - so you get magical mid-air player movement and THAT was funny.