Based on my experiences, I would disagree. The "core" becomes a mess of versions and dependencies - you still need ALL the other repos to be able to change the

Based on my experiences, I would disagree. The "core" becomes a mess of versions and dependencies - you still need ALL the other repos to be able to change the code/data there to check all dependencies. Just split with folders within the repo. Anyways this is my opinion, and I know many wise people that disagree with me. And I've seen companies work well with both multiple and single repo. I.e. your mileage may vary.