1. When deleting an image from Photos/Camera Roll, iOS should have an option to check if the same image is in PhotoStream and offer to remove it as well. Going there to do the same thing is just not efficient. 2. When cropping images using Photo app's own editing tool, the cropped version should be saved to PhotoStream but that does not happen. Original version that's not available in Photos/Camera Roll any more is saved instead. Go figure!