Currently, when you ram a building with an airship, it can be a bit anticlimactic when it doesn't topple over. I suggest that when an airship hits a building, both should shake! (an aesthetic effect only)
Also, maybe the camera itself could shake when it's close to the ground, (or other airship,) and an airship lands/crashes. With subtler vibrations for a landing, and a stronger overall effect the closer the camera is. This half of the suggestion should be an option though, since not everyone would appreciate a built-in shakey-cam.