When I say it should be restricted from some ships, I just mean military fighters and the like, ships that have no business pulling other players over. I'd like to let House Police use it but not House Navy, so there would be a reason for people to be cops, as they aren't allowed to do as much as navy players. The point of disabling both ships is so it won't be used in combat. Even if there was a CD that disabled a ship for a few seconds, that would get spammed and players would be unfairly killed.
If anything, an EMP bomb would be more unbalanced, that would just be an instant kill, and really frustrating to the player that got hit with it. This shouldn't be a fire-and-forget missile like a CD, it should take some skill to line up a shot, like with a minirazor. Remember, it has to be fair for the players at either end of the gun. This tractor beam would be fair because the user and the victim would both be defenseless.
There's already the Train CD. It's possible for a CD to not be able to disrupt a certain size of ship. This needs to be able to stop a large transport, just not a battleship, that would make no sense. Can you guys think of a way to prevent everyone from using this? I think it should only be available to cops and pirates, and maybe by cap ships to take prisoners after a battle, but that's just all I could think of. Any other tweaks?