i think call of duty should just make a basic call of duty 20 game for the 20th game. But that's not all.i believe that they should bring black ops and modern warfare together and mash everything up. Even put in ghost and advanced warfare somewhere in it. Cod 20 just imagine the case. A soldier sitting down( like black ops) holding up a rifle(like frost from mw3)and it just says call of duty 20. What if the maps where mixed up with black ops lava and underground, with modern day like areas. Bring back the best maps in each cod game and mix them up! What do you think I am excited.