I like most of the ideas you've mentioned, but I have a few opinions.
Gas Mask Margarita, Sonar Vision Vodka
I've seen suggestions for there to be wearable equipment in zombies, so I think these would go good in that category. The sonar vision would be some goggles and you would have to choose one or the other to balance things.
Stopping Power, Amm-o-matic
I personally don't like these two perks. If I had to, I would replace stopping power with an extra Pack a Punch. Some people don't like that idea either, but I feel it might go with the flow of things if it was really expensive.
And I think Treyarch scrapped Amm-o-matic for a reason. They probably think it's overpowered, because even if it is a lot of points to get it, at high rounds you have enough to get anything. I would replace that with Bandolier or something like that.
Awesome post though, cool thoughts.