My realization years ago was that there's absoltuley no point in owning a ski that's used for less than 10 days a year. It's a waste of money, space, and mental energy.
So the answer I came to was 3 skis is the proper quiver size:
Ski #1: 85 - 95mm waist for lightweight touring ski.
Ski #2: 99 - 110mm waist daily driver/travel ski with Shifts
Ski #3: 115+ waist pow ski. I run tech bindings here because they make sense at my local hill on deep days, but a Tecton makes sense too.
If I had to add more skis to that quiver I have to to justify it by getting more than 10 days a year on that additional ski and the skis I keep. Which, for 3 years now has kept me at this simple 3 ski quiver.