Instead of teleporting, launch the player upwards so that they bounce along the void. Does this go on forever?

Possibly forever, but I prefer something like:

bounce-seconds: 15

teleport-target: x y z [world]
or
teleport-target: [world] # which would go to spawnpoint

@SlimeDog So they bounce for 15 seconds then get teleported to the specified location?

That's the idea. There may be a more general way to encode the data. Probably bounce should be allowed in any mode. Then the teleport target isn't needed.

I use command mode (mvtp), because the teleport target is in a different world. (Perhaps /vs set world does that; I didn't try.) So I would configure something like:

world:
mode: command
command: mvtp e:world_void:0.5,64,0.1:0:0
offset: 0
bounce: 15

@SlimeDog Ok, by the way it is possible to set the spawn for a different world. /vs set (world). The world is not the name of the current world you are in but the world that you are setting it for.

I will hopefully get to this sometime soon. I am currently working on a fairly large update for https://github.com/endercrest/ColorCube

Good to know about /vs set. That makes my configuration easier. Just set the (same) spawn in each world, and I'm good to go. :)

No hurry on the bounce. It's just a fun addition. Default should be 0, of course.

Any time to add this? It's been a while. :)

Added via the options command in V1.19.3

Excellent. Please see #86.