I'm not sure if it's been suggested yet, but it would be nice to be able to have a timer or number of images that you can set for the "all the same time" sessions. For instance: say I want to draw 1 minute poses for 20 minutes. If I could set the number of images for the session or set the time for the session, I could accomplish that a lot easier. Currently, I have to set up an external timer for those type of practices.
I would also like a setting for ten second poses. I got bored of the 30 second poses and had to move on from the figure (to face and hands). I find the less time I have, the more I have to go into the essence of the pose.