Ill just name 10 for the sake of argument. And these are the obvious big maps from treyarch games past. Seelow, outskirts, downfall, roundouse, array, berlin wall, crisis, discovery, hazerd, grid. There are about 15 more just from W@W and Black ops 1 that are bigger then any map on this game.
I totally agree. We NEED bigger maps. IMO this is where spawns and other crap started to go wrong. MW3 messed up but making everything cgc and bo2 only made it worse. there are lots of great maps from previous CoD that are larger, more fun and offer much more varieties of playstyle.