This was super cool, I love the focus on building speed! The platforming already feels pretty good, but I think adding some "coyote time," when jumping near the edge of a platform, will make the platforming feel even smoother.
Ah, cool! I played the game some more; I can definitely feel the coyote time when I'm not sliding. When I start moving faster (which is really fun btw), the timing feels a little tight to jump off a platform. Maybe scale the coyote time window with speed?