Originally Posted by
jay_dubya
It's needed because of everyone else blocking the gate, and also to allow elites to go to the front of the line if boarding has already started
I agree that many NYC & BOS flights (in particular) could use a dedicated Mosaic line. I'd guess part of the reasoning that JB doesn't offer it is that (while it's admittedly helpful for some) it creates the two-tier system of air travel that they're trying to avoid. Many JB customers pay more to avoid DL, UA & AA because, unlike those airlines, they get good customer service and are treated well at JB. Creating what are essentially VIP & everyone else lines would hurt that image.