Given the new JV partnership with KE, it seems like a logical <customer-benefiting> "enhancement" would be to allow GUCs to be used on KE flights.
Delta already does this with its other JV partners -- AirFrance/KLM, Virgin Atlantic.
My assumption is that if Delta ever allows, in the near future, for GUCs to be used on KE, we would only be allowed to upgrade to Business class (or "Prestige" class as they call it
).
Delta doesn't allow upgrades via GUCs to AirFrance La Premiere, only to business class, so I bet if this happen it would follow the same logic.
Thoughts?
edit: Totally forgot a "will" in the title. Mods can you please fix to read "Will Delta allow..."?