With the current Selection outlines, there are many cases where it can be very ambiguous on what object you have selected (especially if the objects you are trying to pick out share borders, as seen here)
Can you tell which object I’m selecting in each screenshot?
Selected grass:
Selected road:
To my eyes, these two selections look identical. This becomes a massive issue when you have lots of MeshParts stacked on top of each other (because selection often selects the wrong mesh, as seen in the gif below. Note that I am trying to select the road asphalt and am repeatedly alt-clicking in the same spot.)
While it would be great if we could get more accurate mesh selections, one major way to mitigate this problem would be to give us the option for an infill color and transparency for our hovers/selections. In the screenshot below, I inserted a Highlight instance into the grass mesh, and you can see that there is no ambiguity on what I have selected:
