Cost Rollup and Cost Update Processes

 Has anyone done any modifications to the cost rollup or cost update processes to allow multiple BUs/Items to be processed at one time?  We frequently have multiple new items to cost and it is time consuming to run 2 cost processes for each item.  We are considering adding a list box to both screens so the user can cost more than 1 item at a time.  We are just wondering if anyone else has done this and what type of procedure did they create to do this.