I don't know about you, but the thought of everyone and their brother trying to raise their Archeology skill when 4.0 launches (I'm imagining archeology nodes that despawn when you loot them) gives me a huge headache. http://bit.ly/f1udNm

You could stockpile herbs and ore for Inscription and JC respectively months before those expansions launched, making the leveling of those professions much easier. Archaeology seems to be half-gathering, half-crafting, so it'll use resources that won't be gatherable until Archaeologists start showing up in the game after the expansion launches.
http://bit.ly/dS0KmT

It seems to me that they could allow us to repair our gear using a mechanic that costs gold. Like the more damaged a piece of cloth gear is, the more of a certain thread we'd need to have on ourselves to repair it. Higher item levels use higher tier cloth thread. The tailor could unravel cloth as a scribe mills herbs.
http://bit.ly/f8aNAb