So the simple logic of "water with more momentum will go farther" aside, I think it would make for easier use of the waterwheel as a power source. In my own world in the prerelease, I came up with the idea to make an aqueduct to move the rapidly flowing water I found closer to my home. Unfortunately, because this water doesn't flow very far, the angle of the aqueduct is quite steep and I couldn't make it very far from the mountain where I found the source block. I think it'd make utilizing waterwheels as a power source much more fun and interesting if it were slightly easier to make this sort of infrastructure. Currently it flows about 6 blocks away from the source, meaning you have to make it drop every 5 to flow farther, and while I think boosting it to 11 for an even 10 blocks for every drop would look the nicest, I don't know if that would necessarily be balanced considering the reliability of water wheel power vs windmill power.