2. At high levels of zoom, route waypoints have a black square around them.

The circuit depiction in the 1st image is perfectly readable on the Aware device so I don't think that displaying the circuit shown in the 3rd image would be any less readable. I haven't tried it on other devices and I'm happy to accept that you may have seen/used devices where there is not enough space. I realise that this is a very minor point and may not be worth spending so much time on.