Edwin. We are thinking about different things. The water effect is very good indeed. But I would like to have an effect that adds something into a picture - about something that adds for example a scattered bubbles, that are moving where we wish. Another effect that I wish is an animated bubbling area for simulating the lower part of waterfall. Summing up, I think about something like an effect of added and animated object(s) that animates or moves and simulates water motion.
This is my opinion in terms of improvement. Without that the water effects only moves some parts of the image, but it doesn't add anything more to it.