Auto sounds would be super cool. Also, you have some nifty cloud and spray particles. However, I have a heck of a time aligning them right. I'm not entirely sure what the intended rotation and distance from the falls should be. Would be mind blowing to be able to shape my river/falls, then press one button to have a script automatically place the particals in the exact right spot (and user can tweak manually after if they wish) Can't see that being "hard", you obviously already figured out how to calculate what's happening wherever on the spline. Amazing asset!