Automatically use latest version
Make it configurable whether ItemStacks > 64 items will stay unsorted, or sorted and reverted back to stacks of 64 items -> https://www.spigotmc.org/threads/1-8-1-15-chestsort-api.334121/page-19#post-3821591
Auto refills your hotbar with stuff from your inventory when you run out of items / a tool breaks.
Optional MySQL support for player configs to avoid thousands of yaml files within the playerdata folder