If CO decides they want to grant Elite privileges to more and more people they will have to break up boarding into more groups. It was already verging on ludicrous w/o adding kettles using their MileagePlus CCs. Silvers and MileagePlus card bearers should be in a group boarded just before the the last few that are left w/o privileges.

As a matter of fact - I think CO ought to go to status "zone" boarding. Zone 1 for 1st/GS, Zone 2 for Plat/Gold, Zone 3 for Silvers/MileagePlus/Brats, Zone 4 for everyone else. Zones could be printed on boarding passes along w/ Elite Access (if applicable). Boarding could be called by Zone, not status, reducing confusion by everyone and ensuring consistency system-wide.

Plus, a very loud buzzer needs to go off when someone tries to board out of turn and his/her ticket is scanned (just before being put into a penalty holding area for last-to-boards). Only one such experience would be enough to serve notice to the boarding area and that individual.