With some tweaking I could really see a nice implementation of this idea.
I think that higher level enchantments with the lab shouldn't rely on bookcases or whatever other ic2 block to be around to get better gear but instead the amount of eu/t
I got an idea for "enchantment" tiers
Tier1: Supply material for circuit.
Tier2: 2x Tier1 circuit + energy
Tier3: 2x Tier2 circuit + more energy
Tier4: 2x Tier3 circuit + even more energy
Tier5: 2x Tier4 circuit + lots of energy
So tier 5 circuit would be very expensive