Hmm, I just switched from click to mouseover- I'm not sure if it's better or not. It makes it jump around a bit. I'll leave it up and let me know what you think.
(p.s. thanks for the feedback!)
(p.s. thanks for the feedback!)
Are you able to reserve a space outside of the map that is dedicated to displaying friend thumbnails? You could update that section with new thumbnails when the mouse hovers over one of the nav markers. It would prevent the pop up/map position adjustment from being necessary.