dclarkg said:

I don't think that it would be too hard to re design the PT while keeping all the necessary links for the story to hold up, you just need what GL lost a long time ago... imagination! (AND ALSO YOU NEED THE SW RIGHTS PLUS A HUGE QUANTITY OF MONEY)

It's not a question of could they, it's should they. And I don't think that is the right approach. I again defer to Atrus on this one:

I know now that we can't escape the past. Nor can we rewrite it, hoping to lessen our pain. The best we can hope for is to continue to learn, to take from the past only that which is good, and move on. Perhaps in the process, we will build a brighter future." - Atrus