As title!
I like to have a wee blether while we do CWs, especially since I mainly just dual-party with the missus, but considering the length of time the chatbubbles that appear above the characters heads hang around (which, btw I like), it can actually get surprisingly in the way of your combat, or even just whatever you're doing.
Simple solution; make them translucent so that you can partially see through them and get your vision back, without removing them entirely. Don't get me wrong, I like them there and like that they last as long as they do, I'm just not mad on the fact that they completely block stuff out.
Maybe...or just have a button that shows/hides the chat bar :)))