I agree with Tchos, use the colour to accent the height variation you have and it will start to come together with the street placeables in. Some grass and greenery as well in the appropriate places.
To my taste there needs to be more height variation around the houses is shot 2 it will never look right sitting on a flat surface and something to foil that interface will make a huge difference.
There you go, you did not ask for comments I know but you got some. Since you know all this already lets take these as being for new modders reading these posts 
I love that sea wall, it looks good in that shot and looking over to the cluttered scene in the background works well. How does the wall work with the near vertical level change in the tools. does the ground stick out at the base of the wall? I seem to remember they are wider at the bottom that the top?
I also wonder if we have enough areas between us all to do a campaign water deep set of areas in the same way as BG II does Athkatla?
PJ