I do get mad when I see CoD stuff in Blockland.
Get over it, a big part of Blockland is having the freedom to build whatever you want to build, and go through the process of recreating something you really enjoy in another game. Hey, I feel where you're coming from, I hate Halo stuff seeping into Blockland simply because I'm not a fan of the series, but you have to get over the fact that people can build whatever they want, even if it's from another game. There's been tons of stuff from TF2, Half Life 2, and other games. Honestly I'm surprised there isn't more CoD material posted.
As for the build in the OP, it would be far from accurate, but if you weren't going for a close replica than it's fine. The grey walls are bland, the floor matches the blandness, so maybe try adding some different colors that would add to the dark, macabre effect the CoD map gives in the real game.
Poll