With the knowledge on Unreal Tournament map, I analysis three other games. Here is the TimeTable:
From the information I gathered, I made the decision of TF2 had the best replay-ability and mechanics out of the four games (3 above and Unreal Tournament), because it is the only game mentioned with multiple classes and a level system. For level design, I would chose Goldeneye, because it has multiple floors and sometimes buildings .
Here are the game maps:
Game Growth 