Bukkit

What is the enhancement in mind? How should it look and feel?

A listener for commands so you can create a job for people who use commands such as mages, mods, admins.
The config might be like...
  Healer:
    break:
    place:
    permissions:
      magicspells.heal
        value: true
        level: 0
      magicspells.heal2
        value: true
        level:20
    command:
      //without slash
      "c heal":
        income: 0.0
        experience: 1.5

Please provide any additional information below.

There are a lot of use cases where this would certainly be beneficial.

good idea!