It should be easy to distinguish features on a map you created versus features created by others. My first thought is color, but then I thought that might not be such a good idea because at some point we'll let users control the colors of features on maps.
My next thought is to change the shape of the markers based on if you created them or not. And thinking of that, then I think there a few classes features:
* Features you've created that you can edit delete
* Features other people have created that you can edit
* Features other people have created that you can only view
If it was just point features, then it probably would be easy enough to come up with different shapes. But here are also lines, polygon, rectangles.
Also - I want to run experiments to see if the complexity of the feature icon affects rendering performance in browsers. The results will feed back into this ticket.
