One of the big gripes around last year’s Call of Duty: Black Ops 7 was its always-online requirement for its campaign. Progress was often tedious–especially if you had a spotty online connection–and you couldn’t even pause the game without risking death and a checkpoint restart. Fortunately, Call of Duty: Modern Warfare 4 looks set to rectify that point of content, as its single-player campaign will be playable offline. As confirmed by Insider Gaming, players will have the option to untether…