I have an 8th level witch, who is desperately trying to learn any and all magics to heal, reincarnate, raise, and someday resurrect, due to a terrible family incident in her past. At level 4 she found a baby goblin, whom she raised as her child. He became quite civilized (although he gets distracted extremely easily). At level 7 she took the Leadership feat and he became the witch's cohort, as a rogue/alchemist throwing bombs from the back of a giant vulture (no item creation feats). My DM lets me play him, and I do my best to keep him still a goblin at heart, not my main character, and out of immediate danger (except for trap finding), as he is 2 levels behind her. Along the way, she has acquired a library, and the librarian has become one of her followers. She corresponds with him to expand his knowledge and that of the library. He does as he wishes with the building and its income, but my DM plays it that he is loyal to her, and I play her to be respectful of him and his life. She also has several followers in different temples throughout the lands they have ventured through. Also some town leaders' assistants, to keep up on the going's ons. Again, more of an information chain up to this point.
When fighting a demon possessed man, my witch found out that he was actually a summoner. At the age of 14, he had stolen his grandfather's book about being a summoner and attempted to summon an eidelon. Instead, everything went completely wrong, and he accidentally opened up a pathway for a demon to bind itself to him. (The boy actually would become the demon, then break out of the dead-looking demon when it had left him.) This demon then went on a rampage and killed his entire family, and many of the townsfolk. The kid had no control over what it did, as he was pretty much just viewing it from the back seat. After it was done with it's destruction, it would go away for a while and leave him, with the horror and terrible regret of what he/it had done.
My witch realized that it wasn't the man fighting, after she thought she killed it and the now-19-year-old broke out of its "shell", weaping, quivering, and begging for it to end. After some confusion, then comforting by the witch, he explained that the only way to separate them was to kill the man, which he was hoping the she would do. (The demon would possess him any time he had tried to kill himself, stopping him and causing him even more regret.) When asked if he would mind coming back as another race, he seemed extremely relieved. And just as he agreed, his eyes rolled back as they had when he had "turned" before, and she abruptly killed him.
She put him in a stasis, using a spell (Carry Corpse) my DM and I made up. She will be able to Reincarnate very soon and plans on bringing him back as soon as possible. She will stay with him in a Secure Shelter, comforting him, helping him to come to terms with his new self (and his old self) and helping him learn his new "levels". He will be her first 2nd Level follower after all that. My DM and I have discussed this and he will be playing it that the kid will be very grateful to her, and he will also look up to her as a mother-figure (something she is in desperate need of, after the death of her real child). He will be a scribe and will continue to stay in a Secure Shelter while traveling with her and the party, documenting the things that happen to them. If he does not see first hand, she will replay events in the evenings, or whenever, with the help of her staff that has Silent Image and Ghost Sound enchantments. He will then become part of her library network, someday getting his own library to run, when they both feel he is ready.
I don't feel this is any kind of abuse of the leadership feat, but I keep reading thread after thread about how any use of the feat is abusive. So I thought I'd post this and see what you all thought. Would you allow this use of the feat in your games? Is it just the free item creation feats that ruin it?
Note: This is not a complete telling of the story, as it has been going on for years. But it is the basics of how the feat is being used by me and my DM. (Mostly role playing/information, and no extra crafting feats.)