Nice thinking.
We have the colonist list by pressing F2 - I think player stats should be also there.
They should contain: EVA's power and oxygen aswell as GPS coordinates.
It would also be possible, to give control information about inside/outside EVA's temperature.
If player has no EVA the data would be unaviable.
In real life, the mars colonist would also have personal dosimeters that would inform the man in-charge who should go inside the HUB, and who should go working outside. We don't have radiation implemented in MCO now, but for the future it would be a good idea.
I'am not sure if checking life-sighns (Healts and Stamina) is possible. It sure is monitored but does it give a straight reading? Propably not.
Now:
Proposed: