Call of Duty: New Multipayer Game Mode Idea

[TheProblem]

I thought of a new Multiplayer Game mode for Call of Duty. Here it is:

So what if it was Like TDM, but With a zombies layout? There are two teams, and you try to kill the most enemies. (TDM) But you start off with a Colt-45, like zombies. Then you buy guns off of walls with the points you get, and you can buy attachments, perks, killstreaks, and equipment (The perks of course are perk colas). If you die, you respawn with the colt again. You can also airdrop a random box as a killstreak. Just an Idea, Don't Flame Please.