We have 140+ sites with single suite solution. Majority of the RB requests in the workbook have the 'site' segment applied along with other segments.
For Scheduled Workbooks : We have to edit every request where site segment applied x140+
For Dynamic (with control) Workbook : We could make the site segment(s) the select control but that would only apply that segment, alternatively users would need to know or to be told which multiple segments to use for which requests.
Have the option to apply default segment(s) (like reportsuite IDs) from a cell, but keeping the existing segment selection options too. Having similar feature as publishing list overide (specifcally for site segments) would be even better but that's a seperate feature request 😉