Well I used leadership in the craftsman thread to dictate the numbers and levels of craftsman the craftsman could recruit into a guild.
However, here is the feat that pops into my mind at the moment
Trained Professional
You are skilled at instructing others.
Prequisites: Cha 13+, Leadership 9+ ranks in two specific skills of your choice.
Benefit: Choose 2 skills from your class skill list, you must have 9+ ranks in each of these skills. These are now the target skills for this feat and may not be changed. Once per day, by spending 5 minutes of time giving brief instructions and tips, you can grant a +2 bonus to anyone who heard your instructions and then uses those two specific skills. This bonus lasts for 24 hours, and is non-cumulative with further uses of Trained Professional.
Special: This feat may be taken multiple times, each time it is taken you must choose 2 new skills that you have 9+ ranks in each.