I end up leveraging a single repo of Bedrock to manage multiple WP sites with the same plugin/dependencies and theme. I find it incredibly helpful to managing WP core and plugin versioning rather than tools like ManageWP, InfiniteWP or something like CampusPress.
Does anyone else do this to manage a large number of WP instances? If so, how do you handle when a site only needs an additional plugin or theme, or when one instance is a multisite? I have noticed minimal drawbacks, but am interested to hear how others do something similar.