https://www.spigotmc.org/resources/system-overhaul-update.36457/​

[!] since version v0.4.5.4-dev: [!]
The current build is tested with Minecraft 1.16.x only!​

New

• reworked ChatSystem
  • i've reworked how the chat is getting handled by System
    • It's much easier to understand and more flexible
    • i only use around 50 lines of code instead of around 270 lines
    • the new ChatSystem handles permissions and the appearance you want much better
    • You can now choose if a player which is afk and is chatting should removed from afk or not - if not, a prefix will be shown before his rank prefix
• reworked JoinSystem
  • i did the same with the JoinSystem
  • JoinSystem also supports player rank prefixes now
• reworked QuitSystem
  • and also for the QuitSystem
  • QuitSystem also supports player rank prefixes now
• added StaffChat
  • you can chat with your staff in a seperate chat now
  • How to use: Just type in '@' and your message
    • Permission:
      • system.staffchat - for all staffchat permissions
      • system.staffchat.use - to use the staff chat, but not see
      • system.staffchat.see - to see the staff chat, but you can't text to other staff members
• added CommandBlocker
  • You have the possibility now to block some commands using the command blocker
  • i already implemented some commands, but you can add more to the list if wanted
  • The CommandBlocker checks following things:
    • if typed in command is on list
    • if typed in command uses ":"
    • if typed in command is longer than one argument
• added back some Saturation checks
  • enable or disable regeneration and saturation of players

Improvements

• fixed permission detection issues
• added Staffchat to placeholders
• changed some commands to the new Placeholder System
• Join, Quit and ChatSystem can now be accessed via SystemAPI (more to find here soon!)
• updated some messages
• fixed performence issues with ChatListener
• changed all commands using the old ChatSystem to the new one

Removed/Deprecated

• removed all deprecated permissions so far
• deprecated old ChatListener - will be deleted within the next updates
• deprecated SystemAPI#has(Player player, String permission)
• removed unused Booleans from Placeholder

If you have any further question do not hesitate to contact me.
I hope you enjoy the new update of System
I do my best, to update this build to stable asap. I just need to try the new features and some longer added ones.

Have a nice week,
isolveproblems