Well since WoW becomes more Alt friendly with TWW, also a good step would be to make those Professions become second Professions like fishing etc.
Just because it makes sense since you always are able to collect Cloth on every Alt which makes it one of the easiest Profession to max.
With that change you could make Blacksmithing, Engineer and Leatherwork much more efficent because you could do it with every alt just besides questing etc.
What would you think about that change?