Hi Jon,
We are using a custom domain based on SQL data source, so if CA provide or not his own domain is not a trouble for us, that's covered. Jaspersoft is a good tool to selfservice, users that has a low knowledge to create metrics are excited about they can make your own charts and dashboards "on the fly", but this kind of "limitations" are causing some troubles, this would has to be as easy as set some check box.
We'll keep looking for a solution or a workarround and will let to the community if we find someting.
Thanks!!!