V15 needs roll-up functionality. To make this more powerful you should include all reports and metrics in a roll up report. Users should be allowed to make as many as possible.
Roll Up reports should include an additional report which shows paths between the included sites to understand cross over.
You can get by with Multi Suite tagging, but of course that's chargeable. Rollups were supposed to come back in Nov' 11... what happened?
@UK_OmniMann I wasn't around late last year, so I don't know what may have prevented rollups from being released last November as you'd heard, but please do understand that roadmaps and priorities change based on a number of factors. As such, nobody should have promised that any feature "will definitely be available" by such-and-such a date. However, I am pleased to report that we are actively working on this and hope to address most of these needs shortly.