Very often we need to re-import Maven projects, and m2 reconfigures it almost all correctly. Latest Eclipse even auto-shares the git repository, which solved one very annoying and repetitive step, but there is one left:

most of our projects use a custom formatting rule, code cleanup rules, and templates to generate some common elements like the project specific copyright headers.

For example Hibernate recommends to download three files from:
https://community.jboss.org/wiki/ContributingToHibernateUsingEclipse

these need to be imported in eclipse, and applied to each project.

Nowadays I need to re-apply these each and every time M2 needs to reconfigure the project; it would be absolutely amazing if I could commit these three files in the project and refer to them from my pom.xml?

We already have something like that working for checkstyle: m2 detects the need to download a plugin, and applies the custom rules. But that's not enough.

Benefit:
not just our own time, but also make life of each and every occasional contributor much easier to get started.