Ruby on Rails boosted starter app?

All the threads I find in here about ruby on rails are pretty old. Now that boosted apps are coming at the 125 MB limit will be lifted, has anyone played with rails again? It looks like the instances now run ruby 2.3.1.

I know it’s not officially supported, but I’d love to help out if others are interested in getting a solid rails starter app that we can remix for side projects.

I don’t really have an answer, but I would also be curious if something like this existed.