should they bring him back

Not for at least 20 years. And when they do, they should keep him in the CW simply because no military commander is going to risk an asset like that out of his or her sight.

Well, I would imagine Dr. Li brought a lot of her knowledge with her to the Commonwealth. And she was the one who worked out Liberty Prime's power management issues, so I think between her and the minds at the Institute they could easily build another giant robot. But it won't be Liberty Prime.

I'd prefer it if they didn't, a bit overkill really for me.

i think there is more than one of him because of that picture of house standing by the legs of a robot but they looked better than liberty prime

Let's use this thread; http://www.gamesas.com/topic/1519580-liberty-prime/