Although I agree with your general concept Lance, in my experience the adaptability of individual plants to survive to blooming is much greater than I think we give them credit for. On the one hand we get a plant in from the wild, and adapt it (or at least a small percentage of the group) to a set of GH conditions. How many of these conditions are the same to start with?
Then you have people growing in moss, CHC, diatomite, bark, rubber tires, semi hydro, .......to the point where it becomes apparent that none of these make a difference anyway. Then you have MSU, Jack's, Jungle green, blood meal, bonemeal, limestone and oyster shell, no supplementation at all.......and they still grow ok. Then they water with DI, RO, Nashville tap, Chicago tap, Los Angeles tap..... and they still survive. Pots, baskets, plastic clay wood.
The amount of uncontrolled variables from around the country is enormous, and just about everyone can get some of it to work! The more I keep learning and experiencing, orchids are plants and probably 80% of there requirements are the same. That's a lot of latitude.
Then we see insitu pics of phrags flowering in the sun with small pale leaves, and phrags flowering under a rock overhang with long dark leaves. Paphs growing on dripping moss covered limestone cliffs (without rotting roots or Erwinia infections). Lowii growing in trees, lowii growing on limestone cliffs. Rothschildianum growing in a garden in the Kinabalu state park.
There are undoubtedly going to be species we just can't figure out. Most likely things restricted to a very small range. But I'll bet we would be OK for the bulk of things we try.