Since gravitational waves would still be restricted to the speed of light what would the benefit be? Would "obstacles" be circumvented? I would think interfere

Since gravitational waves would still be restricted to the speed of light what would the benefit be? Would "obstacles" be circumvented? I would think interference would still be possible but instead of line of sight it would be large gravitational distortions (black hole, stars). Humility clause: I don't know what I'm talking about.