[jgtrosh]

My team implemented (and reimplemented!) a project using one repo per module. I think the main benefit was ensuring enough separation of concern due to the burden of changing multiple parts together. I managed to reduce something like 10 repos down to 3... Work in progress.

[tpm]

> burden of changing multiple parts together

Then you are adapting your project to the properties of code repository. I don't see that as a benefit.