Oh, look, it's this thread again.

Stone, Sea, Sky is enough of a metric to go by, since clearing it for any given fight tells you your attack damage output should be sufficient in ideal circumstances. You want ideal circumstances? Do mechanics properly. There's really only so much a dummy parse can tell you, and an exhaustive raid parse is only really useful for all the stats besides the tabulated DPS.

"Waffle, your DPS was low." - raid leader. "I died to prey." -me. "Yeah, my bad." - the healer. The end.

No amount of dev-added tools will help you clear content. What you need to do is find people you can trust to do their best without needing to scrutinize them every second.