There's something to be said for a good user interface. Look at the ugly UI of Second Life, for example. Compare that to World of Warcraft, or what would have been (and might still be) Star Trek Online. Looks are important; at the very least, the interface should match the aesthetic of the world in which you're playing. But beyond that, there are other considerations.Obviously, you want to be able to quickly find the commands you're looking for, and perhaps even customize the UI to match how you think. Assignable keyboard commands are a time- and sometimes life-saver. And although its growing increasingly rare these days, sometimes monitor size and screen resolution are important too. So, when they're all stacked up against each other, who's got the best UI?
