It's a huge start to make new internal engine for the plugin.
It should support some new possibilities:
* Permissions for joining players will be already precalculated.
* VaultAPI 100% support.
* Separated Frontends, Internals and Backends - strong own API.
* Use names, uuids and IP addresses in the entity column with type 1 (player).
* Just be faster.
* etc.