Suggesting one, using source repository analogy : Below system level you can harmonize (merge) branches of the same system (repository). At system level you wo

Suggesting one, using source repository analogy : Below system level you can harmonize (merge) branches of the same system (repository). At system level you would harmonize repositories - might involve politics I guess Tree vs forest (more than one root) Beyond systems level would be organic (system of systems) Does that make sense ?