You know, though, over time I think the whole vignette thing is not a big issue so long as it isn't severe. If someone is shooting jpeg with a modern Nikon then it can be automatically fixed. If they're shooting raw with Adobe, NX, and others it can be automatically fixed there too.
I used to have an 85 f/1.4D that I sold last year. With the rebate I just ordered a 1.8G. I think I'll be happy even though it won't be a commonly used lens. I won't miss the 2/3 stop for what I shoot. I would miss the extra money!