One question I haven’t seen answered is whether freestyle is going to save the Internal render or is planned to move to cycles?
Mention has been made that there will be no further official dev for the old internal render leaving any changes to the community. Will the freestyle devs be keeping BI alive as part of freestyle.

One suggestion I would give for future features is a full painterly effect. I guess it would be based on faces, filling them with a ‘random’ array of brush strokes to make it appear hand painted.