The Next Generation Repositories Working Group from COAR has recently released the first draft of its outcome report presenting 12 user stories that outline priority functionalities for repositories (see http://comment.coar-repositories.org/). The update following the public comment phase is forthcoming.
Several user stories, primarily "8. Resource syncing and notification" rely on the ResourceSync protocol as enabling technologies / strategy
I propose to implement the ResourceSync Framework Specification in DSpace, see http://www.openarchives.org/rs/toc