Hamstring subject to diminishing returns.
That is all.
OK! Now quite all! I jest! I jest!
Raiding is about to become much, much more different. Y’see, Blizz is removing attunement from the Tier 6 content, namely Black Temple and Hyjal. You no longer have to have the vials from Vashj and Kael to access these instances. Meaning, of course, that guilds can rush straight over to Black Temple and wipe on Tier 6 content right after Karazhan, if they want to.
Also, Blizz is making it possible to “skip” straight to Vashj and Kael in their respective instances. In other words, you no longer have to clear the previous bosses to make attempts on them.
This is going to be interesting…