omebody who flies a lot of segments, mostly on UX, does not add much to the bottom line of UA.
Uhh, no. short haul fares can be quite profitable. A short-haul flyer paying $400+ for a <500 mile RJ RT is more profitable than a longer haul flyer paying $400 for SFO-BOS. Those short haul flights aren't $39.
For segment qualifiers, I don't really understand how you're going to lose that much if you don't fly long hauls.