Some boulders/rocks or whatever you want to call them are not that big.
It would be great to have smaller rocks come of when the rock is pounded with missles and other heavy weapons. Those smaller rocks can then have negative effects to the ship when you collide with them (damage).
That wouldn’t only make it more realistic but also make players think twice before unloading missles at them or players hiding at them.
I would consider this change not important, maybe when someone has a spare minute to look into it if that is feasible. Balancing the game and fixing MM are more important at the moment.