The repair enchant is too good, I agree. I have been considering alternatives, but I'm still not sure how to approach the problem.
I'm thinking of seriously nerfing the enchant itself to something like 1 durability a minute (simply removing it might break things).
However to have "quick" repairing some other mechanic will take its place. Maybe an item with its own durability that repairs any equipped items over time and will eventually break. That means you will need to keep recrafting it. Alternatively it won't break but will need recharging in some expensive fashion.
As for aura nodes I do have some things planned for them in the future. Not a nerf exactly - more of a return to older times