Mr. Fidgit,
My Clr6/RSoP1 will take Leadership at level 9 (+2 levels of RSoP) and at that point will have a 20 Chr giving him a leadership score of 14.
I sent my wishlist to my DM and he sent me an email back explaining that I could go ahead and completely construct my cohort and that he had a "nasty" idea. Kind of makes me not want to take the feat on the one hand but on the other, intrigues me to find out what exactly he has in mind. I decided that I would follow the DMG and simply request the Race/Alignment/and Class of the cohort and leave the rest to him. (Actually all I asked for was a good aligned magic user that could have the feat CWI)
Delving a bit more into the details of the cohort, I think my DM is going to somehow tie the cohort into the spell, lesser planar ally. My DM can't stand min/maxing and will take the consequences of LPA very seriously - aka - no free 8 hd hit point blob creature to hack and slash for the cause. With that in mind, I have been hesitant to cast the spell - not to mention, our party still doesn't have a clue as to what's going on - we originally went there in on a justice mission to capture or kill Ridithidor's killer.
Ok, a bit of background - we went to the town where the old temple delvers had set up camp and met this freak, Ridithidor - my DM roleplayed him very much like a swashbuckling charismatic comedian (who was not trying to act any of those ways). Using Player knowledge that something was obviously up and there was a lot going on behind the scenes, our party somehow got on the topic of the ToEE and how there was probably some secret orginazation running the show. Strider really played it up (all of this is available in Solid Snake's Story Hour - labeled ravenloft). Unfortunately, in attempting to push the limits of irony, Ridithidor disappeared and we later found him assassinated at the bottom of a river. Strider took this very seriously and felt completely responsable for his death. He then made a blood oath to bring Ridithidor's killer to justice (sliced his hand open and wrote in his own blood a message which he posted at the town inn that addressed Ridithidor's killer(s) and said he was hunting them). Unfortunately, in attempts to rescue the party in RttToEE when they encountered the Silverback ape, he was killed. Lathander (the cleric of Pelor - yes he has that name on purpose) spoke to Strider's soul and agreed to take up the charge of bringing Ridithidor's killer to justice. At this point, that is the only reason the party is even at the Temple - they still know jack about Tharizdun, the connection to the war, and the sacrifices. I as a player have put 2 and 2 together knowing that nothing my DM ever does it at random and it is all ALWAYS connected (somehow), but our players haven't a clue. This is the other reason why he has not cast the spell yet - it would seem odd to call upon some of the highest aid from his deity to accomplish a task he personally agreed to that doesn't directly involve his faith.
However, my party is getting to the point that the additional help will be required in order to simply survive (don't forget - it's RttToEE). Not to mention he has seen evidence of the cultists and the sacrifices they perform. I am working on finding out more information that will legitimate summoning the LPA.
BTW - as far as I understand it, the cohort gets 50% of the XP that the PC does, simply for being the cohort. Thus, he could be in his lab crafting things and still get the XP while my PC goes and kicks some evil toosh. So, I don't think that the cohort would have any problem making items for my PC. Moreover, this will be roleplayed out, and my PC would solicit a cohort for that express purpose - to aid him in his quest by being a supplier of sorts. Finally, I don't think it would be a problem at all if there was a transaction involved for the item - in the form of money. In fact, this would probably required and could be beneficial in that the cohort could then make even more items.