I like the list in the OP.

When they force me to layover for 7 hours in a USA hub on my way to HKG, ICN, IST, etc, I would appreciate at least the recliners that were once present at ATL A concourse.

Also when paying for M and I, I wish there was a way that DL would resolve pre-selected seats on final legs like NRT-ICN, NRT-HKG, AMS-EDI, AMS-IST, and so on rather than coping with the complex system in place.