Specify delimter in text_agg (Reports)

We are using reports to export data for our product and have come acress a need to use text_agg() in one of the columns to stop duplicate rows. This good (we need the aggregated data) but it would be nice to extend this to supprt a delimeter type like we have in Join(text field, delimiter) which is not available in Reports. As ware exporting a CSV it would be nice to be able to for example use | as our delimter in these columns. I know I can make a new field in the DB and use that which I will do for now but thought I’d post this anyway.