If by gravity ray, you mean being able to disable the gravity of an object and pull it twoard the TARDIS that may be possible. Maybe as an imitation gravity ray, the TARDIS could launch an invisible grappling hook tword an object of choice while overriding its state of gravity. It would then pull the objet twoard the TARDIS or the TARDIS could tow it. good idea though

Matt will probably say no because it could be used as a weapon and he does not want the tardis used as a weapon..

How would it be a weapon?

well u can make it 2 where adimns can disable/enable it plus wat if u cant delete its gravity wouldnt that make gmod crash?

It could become a weapon by grabbing people or explosives and throwing them around... Also no it will not crash Garry's Mod. I have made an addon that gives each prop its own gravity for like spacebuild type playing and it causes no lag and does not crash.

i just checked pretty sure matt rejected this

I never rejected it, infact i quite like the idea. Not abducting people maybe but the ability to suspend something relative to the tardis like a gravity ray might be useful

This is what i mean

make a trancemat built in that would be cool