Okay, so we have moving water that runs across the map. And we've created objects that go over waterfalls and flow down the river, but what about the units?
So basically, moving terrain. Let's take If I had a Trow as a map, and think that down one strip of the center of the map is a giant moving section, kinda like a treadmill. If you step onto it with a unit, the unit will move. It could go all the way up to being as advanced as having many of these at varying speeds around the map, perhaps to take shortcuts or to totally create a new way of Mything. I have a feeling that it wouldn't be "clickable" if the terrain was moving, but if a unit did pass over this section, it would carry it as far as it would take until it reaches the other side.
Experts?
There could be like one giant map that is moving, and you are essentially stationary, but if you stop, you eventually get sucked into a wall of trow waiting to kick you, but you have to fight your way to the finish line. Kind of like those games where you are controlling a car or moving object, and you are stationary, and have to react to the terrain coming at you. Think: SKI FREE!