I think ref: numbers of developers, the willingness of Oracle to open JavaFX up to the community has not reached significant numbers. There are a lot of people who've lost interest in following the framework a long time ago. If we are going to improve the low level rendering API, (I've a great deal to say on this - in another thread), and we can improve scene graph speed etc. Then I think some posts in relevant forums should promote this.
The java game dev. forum would be one such place. http://www.java-gaming.org/
