In Helmet HUD - same way we press Q to focus the pack let's press R or something to give us an in helmet view, there can be statistics there like direction, wind(when a vane is attached), power, oxygen levels etc. Then we can have a new "sonar" device that we can link to a specific beacon that always shows in the HUD but only one, it can just beep and you can see oscillating waves in the HUD so its not also too easy. similar to when you called a mate in Spore during the cell stage.
This can be expanded in so many ways, let us deploy satellites into orbit and make an antenna attachment similar to the wind/solar ones and then we can get data from the satellite sent to us, this can be disrupted under caves. This way there is progression to it. In the beginning you can make the basic components on your suit(since we know those slots are limited and precious) and eventually upgrade to satellite telemetry and etc sent to your suit, this modules can be upgraded on the satellites as well by going up there and doing space walks and all that!!
Well time to upgrade the mirror on my telescope so I can find nearby life on planets! wooooooottt?!?!!?!