1. I like the big maps because they can combine small tight spaces with large open ones. Along with offering more variety in gameplay.

2. Have certain areas of each map tailored to the play style of certain people. for example you have a staircase that has only one way up and down with a window in the back so that you can camp, but its like the cat walk on Der Riese. And then have some pattern in the maps for the "runners" to create R*pe trains.

3.Go back to only having zombies come out of windows and such because in later maps they have them spawn inevery single room even if they don't have a window, at the very least reduce the number of non-window spawns, because for me it took the fun out of it cause you had no time to rest.

4.I enjoyed boss waves like the dogs or monkeys, but when they added George Romero to Call of the Dead i thought it would ruin it for campers like me. And it did, you can kill him but he only stays dead for a few rounds before resurrecting, which for a boss i would think is unfair considering how many bullets i pumped into him! So i propose sticking to special waves instead of something like Romero. The only exception i can think of is if they made an enemy like Romero that STAYED dead when killed, but was really really hard to kill.

5.I would like to see every weapon they put in the game, whether multiplayer or campaign be in the game. I mean everyone thought we'd get to kill zombies with and AK-47, but the cut it for what ever reason. Yes i know they have to balance it, but find other ways to balance it. Which leads to my next idea...

6.Maybe have guns that are bad when normal, but awesome when P-a-P, but then another set that is good unupgraded and so-so when upgraded. Or any kinda combo or stat balancing like that.

7.An idea for the zombie leveling is that you can have "specializations" that you earn and level up as you play. They could be something like "GRENADIER - Double ammo, damage, and area-of-effect. Can refill other players' grenades" or "MEDIC - Smaller weapons like SMGs and pistols have double size clips, players around the MEDIC receive a 50% health boost added to they're existing total health (including Juggernog) But the MEDIC loses 50% of his health" This could add a new dynamic that forces teams to consider who is place where and who uses what "Specializations".

---WARNING THE FOLLOWING MAY ENRAGE SOME PEOPLE, READ AT YOUR OWN DISCRETION---
8.Lower the Easter Eggs' difficulty down or at least decentralize the map from the Easter Egg. Most of the maps in Black Ops felt like they were designed around the Easter Egg, instead of the Easter Egg being designed around the map, like it should be in my opinion. I say this because you play Shangri La and every single thing in the map serves some kinda purpose in the Easter Egg. As a result i felt like Shangri La didn't have very good gameplay. Whereas when you look at Ascension you play the map and its fun to play with certain parts activating the Easter Egg but it's not required aside from the rocket launch, but you have to unlock the P-a-P with some challenge so i think it's OK. Aside from launching the rocket, you were able to play the map and not feel like you were missing anything important.
In Conclusion, i would say bring zombies back to what the original idea was: "A cool survival game where your stuck in a certain area and must survive against waves of zombies and get the highest wave/score possible." If they do that then attach other ideas while still keeping that core idea, scratch that, it should be a core RULE. That they keep that rule while adding things that make zombies funner, like more gamemodes, leveling, an easter egg designed around the maps that doesn't require for people and days worth of time to solve by the average person; instead of vice-versa, and innovative gameplay ideas like lower gravity on Moon. Which leads to my last point.

9.In Moon when i was in the low gravity areas of the map i would experience what you might call "LAG" (no i was not lagging, i never do because i have a fairly awesome sauce connection). I came to the conclusion that the physics engine couldn't calculate and handle all of the differences with the lower gravity setting, because i would be next to a zombie and run then jump away from them, put the zombie would still swing at me and hit me even though is was on the other side of the area. I think i'm just asking that they refine maps that have major new additions like that before they release them. Because it made Moon fairly enjoyable for me.

Thank you for sticking with me through all that!!! It means a lot to me, feedback would be awesome!!!