We have built the first modular prototype - Fedora 26 Boltron Server!
Boltron is available as many artifacts including a container image, iso, and a qcow image.Try Boltron
The following is a list of 25 modules included in Boltron. Many of them are also built as containers.
You can give us either general Modularity feedback or try the walkthrough for more detailed and UX feedback.