Upload & Sell: Off
If its just a 36meg sensor, with a higher price, I'd say based upon my D800, that in most cases it would be rather diminishing returns for the added cost.
Its a great sensor, however, I find that its also very demanding of glass and technique to get the best out of it. Now the Zeiss lens on the RX1 is very good, however, the Rx1 isn't really a camera I bought to shoot at low ISO or with a tripod.
Whole point of its size for me is that its this carry most places (not carry everywhere small) without hauling around a tripod, and also that I can use for shooting natural light in the evenings and such due to its great high ISO performance.
36meg sensor at ISO1600, handheld at 1/80th just doesn't show that different of IQ than I'm seeing from the RX1. My D800 can deliver more resolution for sure in ideal conditions, but if I want to stick with a tripod and such, might as well just carry the D800 around.
Suppose price point will be the make or break factor for me though, if its a modest increase in price I'd probably spring for it just the same. If its a big premium I don't think its worth $1000 or more for the added resolution I really wouldn't see it in a lot of my real world shooting