Look at Mr Chipper over here.
They literally started the revamp by also utilizing the revamped zones for max level content. Thinking they didn't learn their lesson and can't produce better this time around with a much bigger team (which they're hiring for to boot) is just sickly negative.
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I want to hope that it'll happen in 9.0, but it wouldn't surprise me if it took yet another expansion for it to fully arrive... Which would break this lil' rodent heart.