As a long tern Silver until only the 2018, I simply don't see the point of selecting C+.
I'd rather have a exit row seat that I can select at booking.
Free drink is nice, but I have Amex Platinum, so I don't worry about it.
I understand Delta wanting to sell a middle cabin.
But why any Medallion would think that's an upgrade is beyond me
It basically lets Delta off the hook.