Hey there! Great mod... I really love what you've done. Been using it extensively on my server.
Just a little feedback from a fellow dev/admin:

-one of your waterfalls has an engram name that isnt standardized to the others. For more amateur server admins that can be confusing

-The pillar waterfall creates fps drops when viewed from angles where the additional particle effects spawn (I notice they dont spawn from every viewing angle)

-The more complex/physics-based waterfalls dont look like liquid once they hit the ground. and if you want this to be an addon for something like Eco's mods, that becomes really obvious when you have one over the water blocks in eco's mods and the drops sit on top of the block. I know thats because those blocks are solid, but you may want to just have the blobs dissolve on impact and use the steam effect from the lower spec waterfall.

Some thoughts for your future work:

-A waterfall with no rocks would be extremely helpful since Eco's stuff has tons of ways for me to make a way to look like the waterfall has a "start" and this would help make larger falls by layering them.

- simply some wider/longer variants of the "low spec" waterfall would be utterly amazing

Thanks again for the awesome mod. :)