A lot of log entries appear because of things happening in the context of a repository. But in most cases the repository name (or at least identifier) is not given. So it's hard to check which individual configuration influences a log message and perhaps has to be changed.
It would be very helpful to add a context (what fits best, e.g. repo id, user name, ...) to the log output to help identifing configuration or other problems even in large installations with multiple hundred repositories and users.