Every year, Call of Duty either tries to reinvent the wheel, or undo the reinvention it tried last time. With the upcoming Modern Warfare 4, it's attempting the latter—Morgan has played MW4 multiplayer at Infinity Ward recently, and he's not convinced it's a leap forward, despite being confident it'll be the best-playing Call of Duty in years.
MW4 has the monumental task of living up to MW 2019's reinvention of the series, while trying to fix Modern Warfare 2's controversial changes. One of the biggest criticisms was its absurdly strong visual recoil, which made its guns feel, frankly, quite messy and unresponsive. This was somewhat fixed in MW3, but that half-sequel is a whole other can of worms that the devs are steering clear of.