The value of an offensive coordinator

I never played football, and I do understand the value of an offensive coordinator. What I would like a better understanding of how does this group feel about sharing a position as off. coor. with a position coaching assignment. Does this sharing detract from either? My basic feeling is that it does, the more experienced here on this rant probably know more. I certainly don't like co-coordinators, and I am beginning to think that sharing this position is not in the best interest of the team.

I do think we had some imaginative calls, but they seem infrequent at best. We seem to be in the Charlie Mac mode sometimes of the "three yards and a cloud of dust." As for yesterday's game, the offensive line played well rarely. I would like to see a new offensive coordinator. Unfortunately, I don't think Kragthorpe is the guy, and neither is Studwara.

In a tone different from many posts, I am asking this in a serious manner. I am more than happy to acknowledge my lack of expertise. Some serious comments would be appreciated.