Thanks. Yes, dirt is still to be applied. Wouldn't have forgotten that, but I don't know yet whether to apply on the objects or just in post. Moving the water is a good idea. Actually this calls for a rainy, dark mood, but that's up to the clients.
Btw. if anyone is interested; simple shapes all around and cubes for the peat (displaced by a painted mask). Dikes are just a painted soft blob, some color adjusts, inner area subtracted from outer for embankments, and inner for masking water to keep it inside (and it's 2m higher than the land). Far villages are just 3 pops of house, church and barn, and some oaks, all masked by a hard blobby fractal. Subtle ground displacements, masked by the inverse of a pools fractal. Reflective (RT) shader masked by the same pools fractal.