I'm looking for an addon that would look at the raid dps and say, "With this dps, the boss will die in X seconds". Is there anything out there that does this? Thanks for the help.
It will calculate the current time to die with current DPS (so during heroism the numbers are probably going to be a bit scewed). It is what I use, and it is pretty accurate.
As far as I know, there is no addon that takes things like DPS modifiers (like raidbuffs/boss debuffs) into account. I doubt this addon is very reliable for a lot of encounters.
Remember that it bases the time off of the current dps so if bloodlust happens, or people start dying, the time might change drastically or stick at 5 seconds for a while..