v10:
Use Old Names pref is now more descriptive, shows up as "Rename SuperKarts to SpeedKarts" in rtb/glass prefs
You can now load music from the custom gamemode (pref is disabled by default)
You are now told to check the /download command if you have no tracks loaded
Gamemode is now playable without any track, the Lighthouse track is loaded by default. You will still get messages about needing to download maps, though
Video of this in action. Looks like a perfectly normal game, but I actually had no FASTKarts add-ons during that video!
I thought I was pretty much done with this gamemode but I got some ideas and felt like doing a little more. I also got a much bigger update for Deathmatch that I'll post about shortly.