Universal MOTD based on permission

I'm looking for a plugin that won't only be usefull in providing information to new users of a server but also cutting that out for the ones that already know it. My idea is a plugin that checks if the user has a preconfigured permission such as membertag for my server. If this is false then it will then display what you want from the config file in a format like this...

Code:

  "FalseText": [
    "<color=orange>~#~#~#~</color>",
    "<color=purple>Become a MEMBER of Moose!</color>",
    "<color=purple>Visit us at ukmoose.enjin.com</color>",
    "<color=orange>~#~#~#~</color>",
    "4"
  ],

Maybe even another ^ if the booleen returns true to that permissions saying Welcome back, checkout update #398 whatever when they join. In the format of the code above.

What's you're opinion on this?

Edit: Then even going further you could make one that can check multiple permissions for true or false on join and even leave could broadcast an admin has left the server for instance.

 

Basically like that but checks if a user has a certain permissions on join and then outputs the messages depending on true or false.
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