We used Collector extensively in search and rescue efforts for Hurricane Havey, Irma, and Maria. I like that I can see the points of device locations, but it would be even better for situational awareness if I could choose to see only the most recent location of each user. Taking things further, having some sort of "friends" list that is map specific and can be configured on AGOL would take a large chunk of out of the blue-force tracking problem. Would love to see a list of all my select "friends" (organizational users), and their most recent activity time; and tapping the name pans to the point on the map. At a minimum, even just different colored dots for each user would be hugely beneficial with the ability to tap on a dot to see the attributes.