I have an idea.
Why not set up the world where everyone starts in watopia. Have all the other worlds as suburbs of watopia. Each person can ride watopia or get to the other place by riding to it over a bridge or through a tunnel.
It would allow everyone to be together while choose which ever course they wanted.
The world would be massive.
You can expand watopia in future or add suburbs.
You can create a Tour of Watopia that’s pretty big.
Just a thought.