<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by pinniped:
I think there are a few good examples of airlines that have tried to reward those fliers without kicking everyone else in the teeth: AA using Q-points to get premium fliers to Plat/EXP faster, providing easier or complimentary upgrades to full-Y customers, etc.
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Similarly, UA instituted its UGS (United Global Services) program for high rev, premium customers. Given that, I would think UA has no immediate plans of its own re any restrictions similar to DLs & COs.