Quote Originally Posted by Seraphor View Post
Losing mettle isn't a punishment for playing, it's a punishment for dying. Don't die.
The number of times I've died due to tanks zoning out and not taunting and/or not using tank stance in CEs or Delubrum has probably cost me a couple hundred thousand mettle at this point.

The mechanic really is kind of arbitrary in the grand scheme of things and there are better ways to encourage people to return to content then forced regrinding (And you bet they'll require you to be at 700K when 5.5 drops for one reason or another).