So, feel free to take this how you want, since I know it can be a rather unpopular option (for good reasons, covered in many places over many posts.)
But coming from a particular thread discussing caster/martial disparaty, one of the main complaints that I feel is being made, is that martial characters lack the ability to influence the over-arching plot in any meaningful way, since they have to specialize so heavily in smacking things in the face.
Given that, I was thinking of putting up using leadership as something of a way to make up for it.
In this way, the level 10 fighter can throw around the weight of his organization to get his party in to see the king, rather than standing around while the party sorcerer baps him/herself with a few +cha spells and sweet talks the guards into letting them in.
It gives the fighter (using fighter only as an example) an interesting way to interact with the world through attempting to build the relevance of his given organization (whatever that may be) and also gets him some levels of fame, and social clout.
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What do you guys think?