MSM: How to roll changes from a local site, up to the blueprint site?

Hello there,

My client has the requirement where, on occasion, local content should be "rolled up" to the blueprint, for roll OUT to the other Live Copies of the blueprint.  For example, if there is an event happening at the local level that they want surfaced at the global level.  Is there a way to accomplish this in AEM?  Launches don't go to the blueprint level, so that won't work, and you can't copy the page to the blueprint (circular reference).  Any other potential ways to accomplish this?

Thanks in advance.