Unfortunately that would be a far longer video than I think I can muster at the moment. It’s a lot of stuff lol. I would have to split each feature of the material and blueprint into it’s own video. I just don’t have the time for that right now.
Maybe another time though!
I can make it vertex paintable, I can’t think of an efficient way to interpret xforms of blocking volumes in a material. Vertex paint definitely seems like the way to go!
I’ll probably add the rain material and flipbook in the same package as the water, they kind of go hand-in-hand I suppose 
Depending on how gung-ho I get during this weeks work I might just see about transferring my work to C++.