User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-4709478-20130317184107/@comment-4709478-20130317201425

Smiting was fixed to be like alchemy. The higher the cost of the item you make, the more EXP you get.

Enchanting hasn't been fixed to be like this, so you can get the same EXP from using a pitty soul gem on an iron dagger as you would from using a filled Black soul gem on a Daedric battleaxe. When Enchanting, not recharging. So, effectively, Enchanting can be used for powerleveling.

The only thing is, Enchanting is held back only through limitations, the amount of gems you can buy and have filled.

Now, with the level cap being removed and "legendary" skilltrees being added. One can continually gain skillpoints just from Enchanting (as the number of times one can make a skilltree "legendary", be about as many times as they wish (though, someone further in the comments said it's seemingly capped at 12 "legendary" stacks)).