Even after clearing content, improving my performance is a huge goal of mine in each raid each week. The best metric for that is dps. Meeting basic tank requirements is pretty easy.. Once you know where to apply cool downs, etc, then the main difference in my performance week 1 to 2 to 3 and so on is how much damage I do, obviously without it being an issue to anyone.

So yea I'm gonna focus on increasing my dps each week within the limits I am allowed in my group.