Right now you cannot use a data element to set the report suite ID. It would be great to be able to set the report suite ID conditionally via a data element so you do not have to write the logic in the s_code, and so you can really control what the report suite ID should be set to in any condition. By writing it in the s_code, it will work for the base page view, but it will not work for any event based rules or direct call rules that send data to Adobe Analytics.