Now, nothing may have been said of what to expect from current professions in the new expansion, but what do you hope to see?
With the new pet battle system, this opens the way for a lot more pets to be crafted by engineers. So I would love to see some battlebots or other awesome pets similar to that. Perhaps a few flying ones.
Gadgets! More gadgets! One that lets you walk on water but like all engineering it has the chance to backfire, and this time giving you concrete shoes causing you to sink into the depths.
Goblin/Gnomish engineering. While I do like being the last remaining profession in the game with a specialization, I hope to see this gone too. Or at least a questline that gives us the ability to train in both specializations and become a true master of engineering.
Looking forward to seeing other peoples ideas!