I should be able to have a real friend as my companion rather than just NPCs. I should also be able to boast about how powerful my character is and also how awesome I am at the game. The firefight mode would be akin to Reach's or zombies in COD. You will be able to see how long you can last with increasingly harder trials, culminating with dozens of Ancient dragons and Frost Trolls and beyond. These trials should then be kept on an online leader board.