yes John carmack is not the gameplay geek.. but the graphics technician..the gameplay elements in their next game will come from the feedback of their entire team about what they want in their next game. Pixar graphics like toystory/Nemo are not photorealistic ,but movierealistic quality graphics in 3d. if you want real photorealism .. then simply turn on the TV and enjoy watching the news all day ..
next id software game should be capable up to final fantasy graphics.. which use Pixar REnderman everywhere. that is cinematic quality everywhere , that is fiction and reality together