I only had time to play offline yesterday, the new tracks are interesting and like most here best was Mute City. A bit let down by Excitebike, it didn't see random at all the few times I played it. From the retro side, Wario's Gold Mine seems easier, the mine carts boost you... Yoshi Circuit had some nice drifts (although first time I played it I was messing up), and SNES Rainbow Road is too easy.
Glad to hear that the VR has been fixed, what I hated the most was a disconnection costing you 20+ points :/










