Illusion Enchants are generally the first foray players will have into the beautiful painful world of enchantment. However, the Illusion enchants for Armors, Accessories, and Level 3 weapons uses a system that isn't used really anywhere else in the game. That being said, it seems almost like a prototype of the new enchant system with "enchant items" that are slotted, resets, and two slots. I think the mechanics of it can easily be changed to the new enchant system (although the work to do it may be difficult)
I suggest that we update the Illusion Enchants to the new system, as this will help new players familiarize themselves with the enchant system cheaply and smoothen out the learning curve.
Illusion enchants for level 4 weapons can stay the same since it uses the Lapine enchant system which is used for many different things.