So, overall this is quite the impressive map pack, however there are a few issues that I've encountered when playing through it:
STARDUST SPEEDWAY
- Something about the flats are broken in software, and fail to align themselves properly.
METALLIC MADNESS
- I feel there needs to be some sort of tell on when the spike traps are going to activate. As it is it's a huge risk whether or not the spikes will suddenly go up if one decides to try and take the speed booster, to the point that it's almost not even worth using them and just ignoring them altogether.
- Some of the colors in the encore palette are not accounted for and still appear as green. This is most obviously seen in many of the ceilings, the rings surrounding the rotating wheels, and the buzzsaws.
BELLBRIDGE ZONE
- There was this constant flickering going on during gameplay, I'm not sure if it's because it takes place almost entirely on fofs or what but it was super distracting. (EDIT: I tested it on opengl and the issue does not seem to be present.)
- I think the Speed shoes shortcut needs to be either tweaked or cut entirely. For starters it's extremely finnicky and doesn't even work half the time, causing me to more often than not fall to my death for no good reason. It's also placed right before a set of item boxes meaning you can use it almost immediately depending on your placement, which is something I don't think should be possible. I also think that it skips way too much of the track for a simple speed shoes shortcut and should be dialed back a fair bit.
HILL TOP
- Hill Top doesn't have an Encore Palette. Perhaps not a bug, but the exclusion was weird considering every other stage seemed to be accounted for.
F ZERO TRACKS
- In the F-Zero tracks, at least on Normal Speed, the players go so fast that it is extremely difficult for the SPB to catch up to them.
EDIT: Added more issues