I just read this thread for the first time and my jaw was on the floor at all the claims of NSMBW being unoriginal and having nothing innovative. It has SIMULTANEOUS CO-OP for the entire actual game. That's what everyone begged for every single time a new take-turns game came out, when SM64 came out, and when SM64DS came out, and when everything else came out.
They add the element that the world begged for, for over two decades, and not just with two-player but with FOUR, and you all bash it. You fools.