Would forms and input fields still work? Could one push their wysiwyg rich text editor into this? (I'm thinking game / VR content where an in-3D-world web browser on some in-3D-world device screen is fully operational.)
It depends on how far it will go. At the moment there is a plan how to do that, but not enough time to implement... You may use it for editor, but keep in mind that text itself would be sent to GPU every time it updates. Anyhow you may ping me in skype lp_funky if interested in doing this, would be glad to help.