I noticed a couple of things when looking at the code for perform() in hudson.tasks.LogRotator, related to the way actions are logged.
1. Removals are logged at the same level (FINER) as notices about builds not to be removed (FINER),
2. Artifact removals are not logged at all.
I was planning to change this:
1. Log all removals as FINE instead of FINER.
2. Log artifact removes as FINE.