Do you know if it's possible to have a virtual report suite recovering information from multiple report suites ? The point is we need to create a virtual report suite with the information from multiple domains (each domain is a unique report suite). Do you know if this is possible ? If now, is there anything we can do to have this kind of mix of data between multiple report suites?
Currently, it's not possible to create a VRS on multiple parent suites. As Andrey mentioned, Rollups can be one of the options, however it has several limitations that might not achieve your full purpose.
Additionally, you may consider changing your implementation to have a global report suite receiving data from all the domains in addition to the respective domain suites. Though, this might involve additional cost.