Really like how easy it is to use the program. I also like that most tools are easy to get to. Two things I would like are:
1. A pencil so you would have a softer tool than just the pen.
2. 4 or 5 favorite colors that could be at the bottom of the screen like the pen sizes. In the main color pallet you could pick and change your favorites, then you would not have to leave the main screen.
Robert Larson about SketchTime - Quick Sketching & Photo Tracing