It's not just Wildstar my friend... It is EVERY SINGLE MMO to come out in the last decade or so. Warcraft, Eve Online, LOTRO, RIFT, WildStar, Guild Wars, Runscape, DC Universe, Ultima, EverQuest, Marvel Heros, Star Trek, etc;
Please stop using excuses, because there is no excuse. It simply comes down to USABILITY. Usability and heuristics are design methodologies and development in computer science, communication and informatics. They are international standards. Chat bubbles are simply a game standard that has been in place for a couple decades now in facilitating good communication. You don't impair good communication because of a group of engineers that are either unwilling or unable to fix a basic mechanic in a game engine.