I think one slight improvement would be being able to make others Wazers appearance customisable. I would much prefer other Wazers appearing as white dots, for example. I still get to see how many and where other users are around me, but the icons aren't too distracting, and aren’t mistaken for emergencies at a quick glance. As a software engineer myself I assume that this would not be too hard to do, as it’s 90% client-sided- 10% being settings storage functionality in the cloud.