I agree with other here for sure... Nothing worst than stirring the bee's nest with regards to already hard to secure upgrades huh?...
Anyway... My friend was also just mouthing off, perhaps, with regards to the BOB changes made for C class since it's "full" of Y fares these days (domestics flts.)
As far as it being difficult for 1P or less to upgrade, just consider if GS and 1K opt to get the lowest fares available for the upgrade, the rest of us tossing money for higher fares are at a disadvantage for perhaps the two class config. flights...