We have an agency that wants to manage several portfolios and they want to create releases for each portfolio. However each portfolio will be creating releases at the same time and using the same epics. I don't believe the agency needs to be using releases when it appears their goal can be to use a Theme> Initiative>Epic hierarchy to create a roadmap which is what they really want and I am concerned that if they create a release at the same time we have one and map the same epics into their release also, this will create problems for tracking, reporting and delivery.
Welcome feedback/thoughts/recommended approaches.