Also, using truly different addons like CoCs mines improves missions by a lot cuz they add whole new ways you can fight ;D. Addons like the BAS Deltas/Rangers look cool, but unless your gonna do something big with 'em like a mission pack or campaign, then why use 'em? If you want cool M4s, you can also use Fliper's pack, and since it's compatible with 1.46, more people can play your missions.