Upload & Sell: Off
As I'm debating moving back to FF, 6D was on the list for a while just because of price (looking to stay with Canon, no real interest in Nikon at this time).
The more I compare it to the 5D3, though, it just loses out in almost every real category for me. Yeah, the wifi would be cool to use sometimes, but it's not absolutely required and I don't care about GPS. (Frankly I'd love an articulating LCD screen on a FF body that isn't a Sony)
But, when you throw in a very, very boring ho-hum AF setup that's just a hair's difference from the 5D2, no dual cards, slow FPS, and lack of a joystick and the dumbed down external controls, you're basically looking at a 5D2 with GPS/Wifi as extra.
I guess some people don't mind paying for what the 6D offers, and I can somehow see the allure, but I think I'm willing to pay (eventually) the extra price to get the AF, VF, dual cards and better overall ergonomics / performance of the 5D3. I guess I'll live without the wifi, because I'm sure as hell not paying what Canon's asking for their addon unit.