Please let's not get carried away expecting the second coming of Christ. We all know that it's going to be a good game. How good? Some will like it more than others as with any other game.
When you start expecting too much it only serves to lead to a dissapointment. I in no way am saying that Doom III will be a disappointment, unless you expect too much that is. How much is too much? Only you know that.
Be patient and you will be rewarded.
What id did as far as secrecy towards the project, is the best thing a companny can do to blow away its fans.
3DRealms might be taking a few years too many but hopefully DNF truly delivers, but in their case, it has been a very very long time. I bet you they're considering changing their technology to Doom III.....
I'm actually disappointed that id will be showing the game off at E3. I don't want to know anything about it (except for what type of system I need to buy to play it) until I start playing it on my computer, but with as much as I surf the net, it will be impossible to avoid knowing a LOT about the game after the show.
May the 3rd Doom be with you