Upload & Sell: Off
The problem for me is that I usually wouldn't accept even minor red shift, and I'd have to fix it if there's a lot or a little, so it kind of doesn't matter, unless color shift is absent altogether.
To be honest, I also feel the same, and that is why I sold the ZM 18. I know Cornerfix and the LR plug in are very easy to use but they need lens profiles at different apertures and distances, so they do require some prior work. The ZM 25 is currently my widest lens, and it rarely has any color issues, I would say less than 1% of the photos. However I heard it has more issues on the M240 unless a leica lens profile is selected for camera correction.
Therefore I do expect my lenses to work well on the 7r but of course I will wait to see real users experience before I commit.