As I said it's understandable but when you have something like the Death Star already in the mix it would be impossible to uninvent the thing, it's like the nuclear bomb.
Difficult to build the first two, prohibitively expensive for anyone but a superpower to build the first 200 but if unchecked eventually anyone could either make one or buy one.
Having the New Republic build them to defend themselves against other people who might have them would create an interesting moral dilemma.
The same with clone and droid armies.
It was a shame that the aftermath of opening that sort of Pandora's box didn't get a proper airing.
One of the things that put me off the EU was avoiding the elephant in the room by trying to replace the Death Star with things like the Galaxy Gun when there already was a powerful metaphor there to be exploited.
I really can't see why George thinks the story has ended now, surely there is at least three films to be made about the perils of re-building the Rebublic and not becoming the Empire in the process?