Woodworking. And some random crafting thoughts.
Tobold mentioned it recently, and WoWInsider too. And I'm pretty sure I raised the issue a long while back in a comment on Tobold's in a crafting post he made.
They'd be able to craft shields. Better woodworking, better shields and higher level. How about customizing shields then. Make Paladin, Shaman, and Warrior shields custom tailored for their requirements.
Arrows. Allow woodworking to craft arrows that address certain needs. Fire Arrow for a small aoe fire burst on hit. Ice Arrow to impart a little slowing on the target. Hate Arrow to act as a taunt. Pain Arrow to add a dot. Useable by anyone that can use a bow or crossbow. (And not equipped in the ammo slot. Simply when used, if equipped with bow or crossbow, fires as the next shot as if in the ammo slot.) This would give non-hunters, but users of bows or crossbows, a few more situational options.
Tribal armor. Made of wood. Like the Forest Troll shoulders. The one like the Horde gets with AB rep. Primitive but "Green." Al Gore would be proud of me. (But is chopping down the forests really PC? I think not.)
Which leads me to custom crafted equipment. Why not allow the ability of include "of the Bear" or "of the Tiger" customization to gear? Using various gems in the standard recipe for blacksmiths, or essences and such, for leatherworking. This would make those crafts a lot more useful for various talent choices.
And, then, woodworking can make basic equipment and ammo for folks just like engineering can.
Oh, how about traps. Like Grizzly Adams. Make a wood contraption that acts like a hunter's trap. (Useable only by woodworkers.)
Or, how about a temporary stable? You know if your stables are full, and you dismiss your pet, you can tame another pet. You're last active pet just disappears into the ether. That's new, but get rid of that. It's not well implemented. How about make a temporary "Dog House" that you can pull out, stable your pet, tame a new one, learn it's ability, abandon, and retrieve your old pet back out of the Dog House.
Speaking of dog houses, I'd better go because I'll be in one shortly if I don't.