I just hope Killzone: Shadow Fall has the single player teeth this series needs. Killzone universe is fantastic, but finds itself lost in technical hurtdles (POOR facial animation in Killzone 2; strange audio glitches in Killzone 3, and unpolishied production values for cutscenes).
This is a reset button on the franchise. New characters, new settings, new story. Please take inspiration from Spec Ops: The Line, Far Cry 3, and Metro Last Light. First person gaming with the incredible GG tech should work on capturing atmosphere, human emotion, and animation qualities that push the game from formulaic FPS to living, breathing art.