Many people have mentioned that one of the key things missing from MWO is the robotic voice in the cockpit that chimed in to keep you abreast of actions on the battlefield that was a staple of Mechwarrior 2 and 3. Personally I will never forget the first thing everyone heard upon launching a mission in Mechwarrior 3: "Reactor: online. Weapons: online. Sensors: online. All systems nominal", hell I still have it as the startup sound in windows!