No, i'm sorry, I fail to see how long names in UI are an issue. The longest name there is Romeo Guildenstern (wich I consider a long name, but I've seen longer ones) and it perfectly fits the party UI, also it looks fine over the character's head wich honestly is odd since there are tons of informations over the characters (name, LS, title and company).
I'm a designer myself and I know for basic knowledge that if you wanna
improve something you have to create as little hassle as possible, so if the lenght of names is
really a problem it's common sense to see if there isn't any other solution that doesn't force ppl to change the name they're already using, because it would be a big hassle.
So IMHO the best solution would be to riarrange the UI to contain all the informations (abbreviate names in party UI, move the company name over/under the character's name, lower the font body).
So no, it's not me afraid of changes, it's just ppl here bitching.