The more I hear about this game, the more I really want to play it. I haven't loved every game id Software makes, but they do make some pretty good ones that set the bar on more than one occasion. I mean, they pretty much invented the FPS genre with Wolfentstein 3D, Doom, and Quake. But they do make some pretty cool games worth checking out.
But yeah, this game looks like the perfect mix of Borderlands, Quake, Doom, and whatever other shit they mash into this game (I think racing is involved). Now that we finally get to see some sneak previews of the game (plus the i-phone game which I haven't played yet), it seems like the reason it's taking so long to make is because they're taking the time to make it right. It seems like id's put a lot of thought into how to make this a really fun game that people will want to keep playing, long after the one player quest is done.