you know what? i like this mod. pretty inoffensive little physics change and moveset additions, but i do think it has its worth. i think the slower speed hurts the gameplay more than helps it, but it does encourage more use of the spindash, which i always approve of. sonic's swift surge is plain, but a neat idea for a double jump ability. metal sonic's ability is a little bit plainer, but i can excuse it simply for the fact that you can use the hover alongside it.
overall? i like this! not much else for me to say, though.