IMO-----Any improved clarity in maps greater than 1024 will only be noticed at extremely close range. In the game environment, I don't see that occurring all that often. So, in a nutshell, I don't see the point in adding stress to the rendering engine and bumping up the file sizes to achieve a level of visual clarity that most people will never see. I'm not saying that you shouldn't, I'm just saying that I wouldn't. And that I wouldn't use it in my game. On the other hand, with so many people around here doing wallpapers, the hi res maps would be nice for close up rendering or animations. Anyway, this is just my opinion, and no offense is meant. Hope none is taken.
Scott