Who remembers the WILMA (window then middle then aisle) boarding order? Under that old system, who would choose a middle seat to board sooner and have a better chance of ovehead bin space? This could be part of a target audience for Comfort Basic. Actually Comfott Basic is better in this regard because the jump up in boarding group is much more than for WILMA.

Yes I did that. Chose a middle seat (on United, no window seats left) to get an earlier boarding group when they used the WILMA system.