lithos wrote:The only difference between "aged wine" and wine is that it doesn't become vinegar ever.
I respectfully disagree. This would allow for theoretically infinite quality wine. There should be some sort of cap for how high a wine's quality can go. At the very least, I'd suggest a low probability on each increase in quality that the wine would revert into vinegar. Remember, high quality vinegar is still useful for making cheese, and it would keep the quality of wine somewhat controlled.
There was also an interesting suggestion that q20 wine (wine that would be q20 if it were made today) would be made as q10 wine, and if left alone for long enough, could go as high as q40 wine (comes out as 1/2x, can go as high as 2x).