Hello, sorry for bringing back an old post.
I just want to say how important I see it is to have a real advanced AI in the game. I´m also a big fan of STALKER series, specially of the mods that makes the AI more free and wild. Aside from the atmosphere, the encounters made the game for me; the thrill of facing only two really good AI opponents (not a horde of stupid soldiers or something), that not only take cover, but run away, hide and flank me, or sometimes completely flee. The mutual hunting through an abandoned factory... In many situations the opponents seemed really human, don´t know if for flaws or good programming.
I belive that with a strong and free AI, together with the realistic ballistic you guys are preparing, this game would be epic.