I'm praying the successful sales gives the team the resources to fix the games many problems in coming patches. Unlike the author of this article I have a lot of issues with the current state of the game and find many design decisions to be not in the spirit of classic STALKER. Finally, the broken at best and absent at worst A-life (simulation of what NPCs and mutants are doing off screen for those unfamiliar) is a massive issue.
The bones of a great STALKER game are there, but it's quite a ways away from it in its current state.