Currently there's no solid evidence that states whether Black Ops III is being made; a new call of duty game has been announced, but it's unclear what it is from what I've read. I'm making this thread on the off-chance that the game being planned is Black Ops III, and I have a suggestion for the zombies gamemode that will hopefully be taken into consideration.
More search options:
It's often a long and tedious process for some players to find a game with the right people, often it can take up anywhere from five to fifteen minutes (give or take) to find a game with the right people. Quite often you are looking for specific team who all meet a prerequisite; e.g. all team members have a microphone, all team members are a certain rank or above, etc. If you don't care about things like that, you just don't select any search refining options.
My suggestion is to implement search options similar to the connection options (low, normal and high), these options would allows players to quickly and easily sift through the hundreds, or even thousands of online players to find a team who meets a certain prerequisite. I don't think it would be wise to add too many search refining options, but just some general ones to help us save those five to fifteen minutes.
Another thing I would like to have added is the ability to reset your stats on zombies. I don't think it's possible to have your stats reset right now, but it would be very useful for people who want a fresh start. I haven't really thought this part over, but I suppose you could have something like a month to change your mind and return your stats to the way they were. I suppose you could also include some sort of limit to the amount of times you could do this; like I said before I didn't really think about this part -- food for thought.