I love how people research so deeply into possible maps and branches of the story, it really shows how creative and imaginative the Zombies community is! Don't let the 1 post thing bother you haha, I've been around these forums for a long time, and I only decided to make an account today. So you're just gonna have to trust me! 8-)
So anyways, I wouldn't think that the idea of a Paris based map is as distant as many believe; what many don't know is that, apparently the map Moon was always intended to be a Paris map (PLAYtheGAME did a video on it a while back, and with them rumoured to have a leak in Treyarch and typically getting many things right about upcoming maps, I'm inclined to believe them on this. Also, for the life of me I can't find the video again to link it, but it's somewhere on their channel!). It was developed to have some Parisian river (which ended up becoming the trench which housed the three nukes), and the bio-dome was to be a big garden near the Eiffel tower itself. They changed it pretty much last minute however, wanting to go larger scale than ever before.
So, do I believe that there's a chance of a Parisian map making it's way onto Black Ops 2? A small chance, but that's it; a big problem with TranZit and Die Rise for me was that the maps didn't get any better than Moon, but Mob of the Dead offered a diversity no other map so far has offered. I would hope that following the last DLC and it's success (at least I think it was), the zombies team would want to 'one-up' the single-player team's map, bringing out hopefully the most diverse map and addition to the storyline yet!
So what do you think? And thanks for reading! :D