Looks great. Again, can't wait.
Are the flares always added at rendertime or is there a way to apply as a post-effect so you could save the original file and the flares separately? This would be a big plus for me.
I'd still love to see the tone mapping options exposed as paramters and color balance based on K temperature. Not that I can't do that in post but having the controls in the frame buffer (updating live on paramter changes) would help to nail the look down in TG without much post to do afterwards. I know, I've asked for this before...
Either way, the flares look great