Once an asteroid is depleted (ore, ice, or moon goo), it shouldn’t just disappear (like what it does right now).
They should add an effect when depleted. I think crumbling away would be the ideal, since it would fall apart do to it’s lack of mass.
I’d also settle for a dusty explosion, but anything is better than nothing.
Doesn’t need to be on the top of CCP’s queue, but something the art team could work on if they have nothing else to do. They reworked ship explosions, and structures, so I would think asteroids should be next.