One more to the list, IROP with travel implications takes some priority over others upgrades. Not sure how far it ranked.

Did.... YYZ-ORD-NRT on AC/NH, AC went mechanical and missed NH connection in ORD, hence they put us on YYZ-NRT direct with only 3 open J seats. This was on I class with no status........ I am sure that bummed some gate upgraders out.