Here is a thing, what if mechanic are done correctly ,no one died, and no one have a damage down? I remember when I did A12 normal back in heavenward and I was on the ps4. We hit enraged twice we cleared it on the third try with 3 seconds left on enrage. Then what then? I remember we had a mnk in the group didn't use there kit correctly such as using form shift in the beginning to set up and just went in and started punching it and was not using positional.
Don't get me wrong a meter is not needed to see if dps low. You can do a fight an notice how fast a boss is dying. Basic understanding of your class is all is needed and reading your tool tips.
Truth be told, I wouldn't mind having a meter for my personal use. For my eyes only.
Before I forget, please don't say I have a WOW mentality. I never played it.