There are two things i really miss in the physics movement: Friction and Bouncing.
For example, a box with friction 50 (1-100) on ground with friction 0 would smoothly glide over the surface when you add force, but on a wooden floor it would just move a tiny bit, or be flipped over. You could also use this for things like a snowmobile in a platform game.
Bouncing would be used for example in physic-platform movements, or if you'd like to create a ball that always bounces on the same height. you would set the bouncing in percent, where 100 would mean that all the force is kept when the object bounces.