The Game should utilize like aiming and then the dpad to move between different weapons on the HUD to quickly swap between weapons rather than having to go to options first. Or even holding triangle or something bringing up a wheel of "favorited" or weapons being carried. Also scopes should be able to have character emblems that are customizable like the emblems in halo were to appear when you kill someone or to be on the bottom of scope see through. Change lens colors and crosshairs. Also being able to custom name weapons and even have that name etched or painted into the gun visible to you and others would be sweet.