Mustrum_Ridcully
Legend
There is also another aspect to the Leader role in D&D 4 that I like on a mechanical level:
Abilities that "reward" players for certain actions, and that provide incentives to take certain actions. Defense debuffs, extra damage when attacking a specific target. This is also something that can be tricky to do with using the Fighter as base class for a "leader" - the Fighter already has good, strong an powerful attacks. If he spends his expertise dice to buff someone else, it must still be able to compete with what he could do if he augmented his own attacks. A class that by definition is based more on helping others and is less effective in fighting (or spellcasting ,or whatever other things you do in combat) on its own would work better with this.
Abilities that "reward" players for certain actions, and that provide incentives to take certain actions. Defense debuffs, extra damage when attacking a specific target. This is also something that can be tricky to do with using the Fighter as base class for a "leader" - the Fighter already has good, strong an powerful attacks. If he spends his expertise dice to buff someone else, it must still be able to compete with what he could do if he augmented his own attacks. A class that by definition is based more on helping others and is less effective in fighting (or spellcasting ,or whatever other things you do in combat) on its own would work better with this.