Hi @jogaco,
first of all, thanks for the feedback! You are right that the maintenance of the Rails integrations repository is lagging behind the open issues and pull requests. This is not due the lack of commitment on our side, but due to difficulties with addressing the workload.
A particular problem with many PRs is that it takes quite some time and back-and-forth discussion about the motivation for the change, adding documentation, adding tests, and all those "small details" which are important for keeping the released Rubygems stable. That is the highest priority when it comes to the Rails collection of gems: don't break people's applications.
We will definitely try to address the maintenance of the Rails integrations repository in the near future: hopefully the situation will improve soon!
Karel