First of all sorry for my English, it is not my main language.
With that said, the plugin is awesome!
The hard work of the developer is evident and, reading his to do list, I could see that he plans to add something that I see as quite necessary, anvil support.
The plugin offers many interesting things and is entertaining.

Recommendation? That each enchantment have the option to add more lore lines, for example: that my Golden Sword, with Toxic III, has a lore line below it that explains what the enchantment does (and that this lore can be modified in a .yml), this way we could explain to our users what each enchantment does without having to create a separate GUI with information about each enchantment.
Another point to improve would be that, in item's lore, the custom enchantments and the attributes are separated. Enchantments first, then attributes (or vice versa).

Keep updating it! It's going in the right direction.