i hope so
for me it needs modern or 60s-90s era i liked the original BO the most for MP and campaign
thought ghost sucked AW was ok but the MP didnt feel like COD i dont like the futuristic maps or weapons
David Vonderhaar (Treyarch's lead developer) stated on twitter the other day that for his new year's resolution he wants to make something different, but still great. so what i take from that is, world war 1 and 2 have been done, future has been done (fuck the future, i agree with you fully on that), vietnam/cold war has been done, and modern has been done. so that leaves the korean war, barely been done, has never been done in call of duty. i did some research on the korean war's weapons, and after seeing the weapons i'm totally on board with a korean war call of duty. like i have goosebumps just thinking about that. i hope they make it as gory and as brutal as they can. it sounds weird but i love gory and bloody games, that's one of the reasons world at war is my favorite call of duty.
EDIT: The thought of next gen zombies is boner worthy. Zombie Verruckt is my favorite map because of how difficult it is, so i want treyarch to make it simple and hard. No easy train spots where people run around in circles for five hours.