Notifications to all site admins using Branda

I was trying to figure out how to use Tips to send notifications and help content to all site admins. (Write it once, broadcast it across the network)
Unfortunately, I was told Tips will only work if network enabled. But each site admin will then not be able to brand their own site.
I would like to suggest that a new feature be added to Branda, a combination of the two scenarios above:
Each site admin must be able to brand their own sites and
Network admin must be able to communicate to all site admins across the network to provide maintenance information, plugin updates info, and help content.