This is very much better. I'd do two things: decrease the wave roughness to almost zero (it makes nicer reflections), but perhaps add some waves (no color Powerfractal) with a painted shader mask in the distance, as if wind blows there. Secondly, I'd add another color powerfractal over the sand as a whole, with one color, no displacement, to get some overall color diversity. It might distract from the 'interaction' of the water with the sand. Or give it a height restriction (distribution shader) to keep the (darker, perhaps algy-like) variation along the waterline.
You could also add a thin line (painted shader again) along the beach in front and add some foam. Just a little.
---Dune
