Considering the age of the game I don't think it's all that bad looking though I'm sure a lot of us play it for different reasons than others might if they just started playing today. Back when I use to run it at 1024x768 it looked pretty good but a few things didn't scale quite as well moving up to something like 1920x1080. The only ones that i find to look really bad are things like the arrows for adjusting the chat windows and the X's to close various windows in game.
I do like the idea of upgrading some of these things if someone is so willing. It can help add a bit more polish to the game, though like others have mentioned as well, it's probably most important for everyone to see everything working first.