McTiernan is in jail!
Len Wiseman isn't a horrible director by any means, and Stargate was thoroughly entertaining! It doesn't take a lot of directing muscle to make a decent Die Hard film, and it's not like McTiernan has directed anything approaching decent in over 10 years.
Also, the screenplay has undergone massive re-writes, as the initial story didn't even have anything to do with McClaine. They just took this hacker thriller and mixed it with Die Hard, much in the same way that they came up with Die Hard With a Vengeance. As far as I know, nobody even has the shooting script, which was re-written when New Orleans got trashed due to a similar scene in the movie.