True.
I'm going to add a create custom shape function where you can put multiple shapes into a single shape. You'd be able to make a ship that has triangles, boxes, and circles instead of it being a single triangle:
Single Polygon Space Ship

Custom Shape Space Ship

But it would be really nice if Sc got sprite rotation.
EDIT: If you guys want to make a lander with sprites, you can still use the physics engine. Just set the space ship's fixed rotation to true and draw the sprite where the space ship should be.