Could we have a separate button to access those exploring and those returning to the vault?
With performance issues on some devices and crashes, it can take quite some time to scroll through your explorers to find which ones are low on health/stim packs or are dead. It would be much easer to access just those who are still exploring (to check up on whether they need to be sent home or revived) and not have to load/scroll past those already set to return to the vault.