What I really like about having multiple repos is that it encourages bounded context and forces us to put at least a little thought into the interfaces between different systems.
When I have worked in large repos, I have frequently seen poor abstractions where too much code is reaching into other code without clearly defined interfaces that leads to projects that are really difficult to maintain.
When I have worked in large repos, I have frequently seen poor abstractions where too much code is reaching into other code without clearly defined interfaces that leads to projects that are really difficult to maintain.