This map is my first map i have ever created in forge. It still needs some work as i dont know what to put on the bottom if you have some ideas let me know! YouTube - Halo Reach Forge Map Preview: Bridge View
The first thing I noticed was that Rockets and your CPU are a little too cozy. They should definitely be spread out so someone can not just grab rockets and then gain whatever advantage you plan on CPU at the same time.
The top looks too open as well, you could just get shot from all angles and someone with a rocket could dominate everyone from the top platform. On the bottom just keep it simple and provide good cover I guess