I have to state a lot of MMO's before WoW and FFXI were 2d and the text bubbles in them were easier to read in a 3d world such as FFXIV. It would be a clutter, but those reasons and examples are better than some. For example saying look at vagrant story it did text bubbles very well and it is a SE game do it like Vagrant Story.... Major flaw with that logic... It was a single player game you as the player only have to pay attention to the single person talking to YOU, in an MMO you will have people talking to you, and to OTHER PEOPLE! Text bubbles are easier to understand and can look pretty in a single player game because it is directed at a SINGLE reader, they can make the bubbles lavish and everything, but to compare a Single player usage to a MMO usage is not the best of examples.