AoA, my comments were regarding the surprising juniority of commands, I proffered some reasons why I believe this is the case. We can agree to disagree about the state and relative merits of shorthaul rostering, particularily the past 2 years, (and projected to be the same as far as the eye can see). Most FO's who gets a slot to LH expresses the same sentiment, "I'm never coming back to shorthaul for a command". Having said that, many have been on type for 7 to 10 years and are thoroughly fed up. Perhaps we only have a certain number of years of shorthaul in us all, particularly if dealing with "death corner"/ MEL all too often, and their Karma is all used up. That is why the slots have gone junior in my view.
Ultimately it is about each pilot judging what they want, and the judgement is in. What we think is irrelevant, they are voting with their bids, and many are not voting to take a 737 command.