You might think this is a trivial thing, but I heartily disagree, and all I have to do is point to a login screen I don’t love to explain why: LOTRO’s. Even once you get past the gotta-put-your-password-in-every-time launcher, the login screen is fairly static. It was built before you could have so many characters per account, so half your characters are hidden behind a clicky button. MOP reader Warroth has kindly pointed out to me that the innocuous little arrow button allows us to sort our toons on the fly, but I would prefer more control.
It’s far from the worst login screen ever, of course, but I definitely wish it could get a bit of a quality-of-life facelift. I love how you can permanently move your toons around in their list in World of Warcraft without the need to sort.
What MMO would you say has the best login screen?