Anyone who does any RP of any kind can tell you that chat bubbles are a borderline necessity. There's nothing more annoying than having to sit and watch your chat window like a hawk to make sure you don't miss anything.

To all of those warning about clutter...if you've actually played other games with them, then you know that clutter is a complete non-issue. And in that RO screenshot, those were stationary shops, NOT chat bubbles. Besides, if they were to implement this feature, it would definitely be something you could turn off.