I think it'd be pretty cool if:

I. A weapon that could disable ships

a) If a ship was disabled, a friendly (or a bot) could tow, repair, or place the ship into a cargo hold of a larger ship - bringing them to the nearest sector's base.
b) A pilot could have some type of on-board repair...thing
c) A pilot could abandon the ship, hoping for a rescue... Thus allowing abandoned ships to be recycled / towed by other players
Towing or rescuing could be a good way to earn income...
d) If a ship could be abandoned and undiscovered, it could prove useful to someone badly damaged

If its disabled, its going to be killed for the bounty on the player, and the cargo.

Your ship, "IS" the player, so you cant leave your ship.

And except for hauling ships as cargo, an abandoned ship would just keep floating off in whatever direction it was headed and add lag to the system.

Personaly, I find more use in gaining profits from a trade run - as opposed to killing someone with a 2,000c bounty.

Also, if the abandoned ship was stopped, it wouldn't keep floating away.