This harkens back to the classic Unix statement, "Unix is user friendly, it is just picky about its friends." I must agree that the support of high DPI display

This harkens back to the classic Unix statement, "Unix is user friendly, it is just picky about its friends." I must agree that the support of high DPI displays is not optimal just yet. However, it is not that bad. At a corporate level one person can do the tweaking and create a great user experience for an entire organization. Given the amount of tweaking and "management" goo organizations foist upon the average OSX installation blasting out a few lines of DPI tweak commands is almost nothing. So it just works in the sense that you can do sane configuration activity and it behaves as you might expect. Also, Unity out of the box is still pretty good on a scale like this: very bad, bad, tolerable, pretty good, good, great. It does "just work" for the most part :)