space anchors or anti-grav drive equipment

[DanielV3000]

I considers about a way to make space combat more interesting. Besides aiming at the grav drive, what would be a way to keep enemies engaged in a fight? This can work both ways, against you and for you. Lore wise, this is a way to smooth out space-time wrinkles, meaning that you can't warp away. Gameplay-wise, this means setting grav-drive engines HP to 0 in the range when turned on. This can be used by you to stop enemies from running away or against you by pirates or law enforcement. You can have this as a missile that blows out a EMP like wave that hits grav-drives in range or something to attach to your ship, and when you turn in on, anything in a radius around you, including you can't warp.
This makes sense in a world building sense, because unless the grav-drive is visible. Most people would warp away from a losing battle, so how would pirates stop ships from fleeing, and how would cops stop pirates from fleeing? Space-anchors of course.