I have a couple of issues with Essentials Kits.
First off, you can access any of the kits in any world. This is not really a good thing, as some kits are exclusive to some worlds, like KitPVP. I need to find out how to limit what kits are accessible in what worlds.
Next, you can get all of the kits at once. Though this isn't really problematic in things like survival, in KitPVP this is a bit of an issue, as you can combine the strongest assets from every kit to be essentially overpowered. I need to make it so when you select a kit, you can only have one kit at a time, or it replaces the last selected kit to stop you from combining kits.