In this day and age where the technology for creating massive colorful and beautiful new worlds is right at our finger tips and yet they still continues to make games like COD or Battlefield, I play games to escape reality, not live it. Yeah sure, we have mass effect, dragon age, final fantasy and the elder scrolls but they are now just adding installments to the worlds they have already given us, besides, they are all RPG's (which I do love by the way) it would be nice to see new worlds enter other genres, instead of dragging them further and further into reality.
I guess you could say, the concept I would like to see again is originality. I know, it's a crazy idea! Suggesting originality makes me look like a madman, but that is what I'd most like to see. XD