I know it can be added in post, but I'd really like to see vignetting added.
Also, I use some degree of horizontal and/or vertical shift on almost every shot, so adding shift would be great (I know you can use the skew modifier but I'd prefer it in the coronacamera
re: exposure, I quite like right now that the DOF is not linked to exposure.. in vray its a PITA when you want to re:expose but keep the f stop the same (or if you want the exposure the same but alter DOF effect)