How is one meant to see those without xray vision?
By improving your lookout technique, by using situational awareness, by being aware of where aircraft may be hiding, by manoeuvring to take a look at all those "hidden" areas.
Above all, by not relying on any TCAS system to give you warning. It won't if the other aircraft is not squawking, because it's not switched on, or the aircraft is not transponder-equipped. The only way is to keep looking out, and being aware of human physiology as regards vision, and ensuring your lookout is good technique.
Any time you get lazy and start relying on equipment in the aircraft you have surrendered control of your life. Sorry, but I like to be in control of my own destiny, and have no intention of being another mid-air statistic because I didn't look out.
You do as you wish, but I wouldn't like to be related to anyone who happens to get in your way.