Keep in mind, people have already confirmed that a real a-life system is in the game files but it just completely deactivated at present. I have no doubt that at the very least, modders will eventually alter and implement this system, essentially doing GSC's work for them. The real question is whether or not the game is interesting enough as a game--or better enough than all the other games that still have active modding communities--to be worth investing time in. Like Inec0rn, playing Stalker 2 just made me want to go back to playing CoC, and when I did I felt extremely appreciative of CoC for being what it is. Like I even appreciated the lack of overdone graphics. The start of Stalker 2 has a million plants and glowy things everywhere just cluttering the screen and distracting you, and I find this kind of thing is always detrimental to intelligent gameplay. Like, the human brain only has so much visual bandwidth, and if you overload it with visual stimulation like tons of high-poly models and particles and shaders, it becomes much more difficult to think about what you're seeing, and almost impossible to imagine the world of the game, because you're being absolutely bludgeoned to death with a high-fidelity visual representation of it. Simpler graphics are much more evocative. So I played some CoC in Truck Cemetery, which is pretty sparse and empty of foliage and has relatively low-poly models, but I was fighting swarms of military guys in the middle of the night during a thunderstorm, and using lightning strikes to time my grenade launcher shots at them. It was immersive and evocative and fun as hell. And I was like "why did I want to play a Stalker game with 'better graphics' again?"
Having a whole new Zone is pretty cool, and is pretty much the only reason I'm interested in S2. But in the end I think the graphics hardware we have nowadays just inherently leads to the development of visually-saturated, stimulating-but-boring games.