If GerritCause was a Subclass of SCMTriggerCause (which is not that far fetched, since a GerritTrigger is in fact an SCMChange), we could make it easier for plugins that react on Code-Changes.

In my special case, I am currently working on some improvements in Jenkins' incremental module handling which should behave differently when the a build is ONLY caused by sourcecode changes.

Making that change would quite neatly solve a couple of problems without creating unnatural dependencies.

I will create a pull request for this.