I apologize if this has been discussed before, but the latest PTR release has the following:
So it looks like you can level up Blacksmithing from 1-500+ now similar to Pandaren Cooking.Professions
Blacksmithing
- Training Project: Decorative Spoons Reagents: Ghost Iron Bar.20).
- Training Project: Ghost Iron Barrel . Reagents: Ghost Iron Bar.35).
- Training Project: Ghost Iron Bells Reagents: Ghost Iron Bar.90).
(snipped the rest, see the post)
That said, while it may be "ez", it will not be cheap as ghost iron will be in huge demand due to Wrathion's quest and the Lightning Forge.