I would think they'll move the engine to Unreal, since Gearbox used that for Borderlands.
Some reports that had whack at it in PAX say that it's...well it's what it was supposed to be - humor, dirtinesss, giant aliens and similar. It was never going to be anything more and probably couldn't be. It's basically a Schwarzenegger 90ies sf movie.
People who liked and expect Nukem, will get just that. People who expect the best game EVAR! Will not.
Is it going to flop? I think it can go either way, and the final earnings depend on the deals made, who will bare the cost of 12 years of development?
On the video thing, it was chosen as the best of Yahtzee. I kind of disagree, since I didn't even get a chuckle out if.