First off, I love LOVE this feature but id like to see it improve just a tiny bit more 
Right now I have to either have the lines cross each other to fill with color, or hold ctrl while drawing to connect the ends so it fills with color.
I would love to have the option to automatically connect both ends without the need to hold ctrl while drawing to fill the drawn shape with color and become the real auto fill option
Im a fast drawer so currently the ctrl shortcut for selection tool is quite in the way when i try using ctrl for closing gaps in drawn strokes
