Creating awareness of other traffic, perhaps.
It saddens me that we are all focussed on other aircraft being the only possible threat out there. Just hours after the dreadful events of Waddesdon last month, a EMS chopper in the US crashed apparently due birds. What are you planning to do about them? Ring them with transponders? Then what about CFIT - let’s put transponders on all the mountains... then what about weather and windshear? What about obstacles on the apron? transponders for baggage carts? We’re driving towards so many alarms and bells and whistles in the cockpit that we will become immune to them or, just turn the annoying things off anyway.
Somewhere we need to stop and take stock of what is happening, not just in our hobby/profession but in our lives. We’re continually driving technology to put in place a less risky environment but at some points the costs outweigh the benefits. There will come a time when we need to ‘person up’ and accept that there is risk in what we have chosen to do. We either accept that risk and carry on or pack up and poke off.