With the 1.1 update this plugin not only works great, but is so fun to use. Having amethyst be useful in both early and late game is amazing. The random bonus damage on swords is great, in pvp there now will be differences in gear even after making them out of the best material. This makes you think twice before approaching. Some suggestion I have is a toggleable feature in the config that makes 2 sharpened swords' damage bonus add up until the limit and being able to change the min/max numbers. While I do think the current numbers work well, having the option to change them would be awesome. I'm genuinely impressed by the plugin.
As it is currently the damage nor the efficiency you get by sharpening your tools work with damage or efficiency enchantments. The other enchants somewhat work. A bow with mending functions but a pickaxe doesn't etc. Currently the only use I found is sharpening lower tier tools and weapons with no enchaments. Please do work on it as I would love to see this function as intended.