You seem to be gloryfying stalker a lot. You speak of this exquisite land of difficult enemies, lifelike AI, and endless immersion.
And it is a damn fine game. But it is not THAT good.
The AI is probably the best ever made in an shooter, but it is not pin point accurate like you give to believe. That would be cheating.
The mutants are dangerous, but there is no reason to follow one through an entire night before killing it other than the pleasure of stalking the prey. It is just easier to fill it with bullets and be done with it.
I like open-ended game worlds, like TES, fallout or stalker. But a linear game like RAGE, filled with dozens of enemies just for your killing pleasure is a much better way to let off steam then following a virtual monster throughout the reality breaking wedgie-filled countryside.
And back to an earlier point, I, myself advocate markers and comprehensive worldmaps. Because, while being lost inside the reality breaking wedgie-filled countryside may be fun a couple of times, it can become frustrating quickly.
I merely have to remember morrowind′s worldmap to bring this up. I′d rather have the game hold my hand for a minute and tell me where i should go rather then make me wander aimlessly for an hour. If i wanted to do that, I would do it for fun once or twice. not always.