I say you should release this, it would be very useful for freebuilds and such.
A few suggestions I have:
RTB prefs for everything; public use Enabled/disabled, who can use it if public use is off (like add someone's ID in and it will allow them/whoever else is in the list to use it), maybe even speed/color if possible?
Or for speed just make it faster than the players walk (maybe like 1.5x faster than players speed)
Maybe even have a setting on whether they can use it in minigames (or just admin created minigames) or not? I'm not a scripter so I don't know if that would be possible or not.