Here's my idea:
A big jungle with a huge mountain in the middle. There is an ancient monastery on the top of the mountain with a gazillion steps leading up to the top.
Practically, you start the map in a little 4 person row-boat in a river deep in the jungle, with zombies along the sides (creepy stuff) and then comeup to the shore where there is an abandoned exploring camp with classic wooden barriers to block off zombies. There will be the first 5 normal rounds with zombies coming from 3 barriers facing the jungle and zombies rising from the river. Facing to the back where no zombies are coming from, there is a gate leading to the first part of the staircase to the top of the mountain. You can buy some old guns, like a sawed off shotgun and an M14 or something you would find in a jungle. There's also a Quick Revive in a little shack.
At round 5/6/7, it is a monkey round, and then every 5 rounds after that again.
Once you open the gate to the stairs, zombies will start rising through little caves to the side of the stairs, but they are pretty wide so you will survive for a while. There is a Mule Kick in one of the little caves, and an SMG to buy.
Once you open the next gate you will go 2/3 to the top of the monastery, there is a Double Tap, a shotgun and an AR and a possible mystery box spot. Once you open the final gate, you go to to the very top and there is a huge stone gate to the monastery. In your immediate room there is PhD Flopper and an SMG and Sniper to buy.
The huge gate will cost 2000 points, and once it is opened you are in the first room of the monastery. It is a big lobby with 3 doors in all 3/4 directions (the gate takes up 4th direction) , a mystery box spot and the power switch. There are 6 stone barriers here, and a trap for the gate which you can buy.
Inside each of the 3 doors there are many rooms, and teleporters like der riese where you have to connect all of them to a pad in the lobby. There is a juggernogg in one, speed cola in the other, and ``attachment roullete`` in the other, like a mystery box but for gun attachments. Each way also has a mystery box space and some weapons to buy. Each room also has a trap.
When you use the main teleport pad in the lobby, you will teleport to a secret cave underground, with the packapunch machine and a special mystery box that is always there, which will give you WaW/Black Ops 1 guns. After 45 seconds you are teleported to either of the 3 teleporters, where there will be zombies waiting for you .
There is also many easter eggs.
These are all good ideas, but they have to go in order with the story that left off in Black Ops, you may be wondering, what? but im serious look it up on youtube The Nazi Zombie Story (READ ANNOTATIONS) Parts 1 and 2, it explains the story completely and easter eggs, check it out, and also I would like to see an underwater map or something dealing with water where you could use boats.