I haven't made charity quilts, yet. But can tell you that working as a group would drive me a little crazy. While I wouldn't say I'm a perfectionist, I really appreciate efficiency (must be my business management education). I'malso kind of a stickler on following basic sewing rules like using a 1/4" seam allowance, pinning seams where points should meet, and pressing seams before continuing to the next step. Basically, anything worth doing is worth doing well. That being said, it would make me nuts to spend my precious sewing time fixing someone else's sloppy mistakes. If they were new sewers, I'd point out the mistakes, help them fix them, and then make sure they understand that the next time, they will need to fix them on their own. Taking up the time of an experienced sewer to continually fix sloppiness is a waste of everyone's time.