Show total damage done

It would be very nice if the raid could show the total damage done, while we are still in the raid instead of having to wait for the defeat screen.

The reason for this is many guilds have rules on how much or how little damage you can deal, so we need to know when to start escaping/retreating. If you start a phase at 100%, you can try to do the math in your head, but if you start the phase mid way through, its nearly impossible to know how much damage you have done, you just have to guess.