Boy there are some real bitter idiots on this forum!
Warren Spector's a great guy and an innovative designer. To think that one cannot take the Tomb Raider formula and add some interesting innovation is the height of ignorance. Look at what was done with the Prince of Persia series - a few nice little innovative features combined with the original game made it a very compelling and great game.
Harvey Smith ruined DX Invisible War - not Warren Spector. This is fairly well known, but I always enjoy watching idiots blame Spector... gives me a chuckle.