Rather than increasing the number of enchanting nodes, I feel that they should remove the Aspect and Essence nodes, baking them into Potency nodes in such a way where, when you gather a potency rune, you have a large chance at gaining an Essence rune and a moderate-low chance at gaining an Aspect rune. Optionally, also update the Aspect Extraction talent to also slightly increase the chances of gaining higher quality aspect runes from gathering nodes, to go along with this change.
This change will do two things: put Enchanting's node system logically in line with many other professions and increase the number of essence nodes you get while farming enchanting.
Provisioning
1. Hirelings should send blue and purple recipes. Other professions receive rare materials up to legendary and are also able to obtain them from deconstruction. Looting should not be the only source of recipes.
2. Add a grocer vendor that sells ingredients. It's annoying you have over 100 of two ingredients each but zero of that third.
3. Include the appropriate provisioning items in the monster loot tables. Items such as meat should be available from mobs.
4. Make plant derived items gatherable from nodes in the world. There are a lot of plant type items such as wheat, grapes, apples, etc. Elder scrolls has had gatherable wheat in games since Morrowind. Just look at Skyrim for an example. Farms have wheat, cabbage, gourds, etc. Jazaby grapes grow in the wild.