Alright, a simple mappack to demonstrate what can be done with high speeds.
Also, word of advice, don't do it with Rainboom turned on.
Link:
http://db.tt/fM0F49c1
It's obviously not finished. The levels are short; intended to be individual test chambers, but I would like to know what you guys think.
Built for singleplayer, but will probably work with more.
One of the levels is set to Underwater... Do you think that "low gravity" levels could work in the future?