I've written up a proposal to implement a new CSS parser for JavaFX: https://gist.github.com/mstr2/f416996caf48e11193f0b6a5883a3926
The goal is not add new features at this point, but to resolve some long-standing issues with the existing CSS parsing (though if you read carefully, you might spot a new feature). I'm interested in your opinion whether this is a good idea to move forward.
