While it would probably be abused, I do believe large object collisions should bypass shields entirely.
Hitting a station, capital ship, or planet, or astroids basically.
Lore could state that smaller objects (ships, debris, etc) don't have the mass to bypass shields, unless they're down.
It'd make landing, and Res combat in dark rings more interesting anyway.
Although I'd need to get out of the habit of just face planting my Anaconda against everything when docking. Lol
And occasionally belly flopping astroids. Lol
CMDR Cosmic Spacehead