Your comments

Editing samples anyway is an option that I really miss. Or simply deleting one should be an improvement already.
The idea of a heath map is to color the plan/sattelite pic, but quite often it replaces that making the map/satpic completely dissappear. Such a shame! Here's an example of how a complete street dissapears because by adding 17 survey points.
If I could only adjust the intensity or opacity of the coloring, it would be useful.