One thing I think that's needed with JavaFX is integrations with DI frameworks! I started a project called DiFx that does exactly that: https://github.com/exabrial/DiFx

This makes state and shared data management in JavaFX much nicer, as you offload those concerns to a container. CDI also provides extensive capabilities with portable extensions and scope management, as well as a sync and async eventing framework.

The problem is that I don't have a "real life" project to try this out on, so development kinda slumped off.