4. Recycled Animations
This is something we see in any long-standing franchise, the most egregious offender being the WWE series, as until late they had vastly the same animations the programmers put in the first iteration of the Smackdown games over a decade ago. With the next generation upon us and consumers needing a reason to splash out the extra cash on the next-gen version of any given game, there has to be more than just a handful of shaders and texture packs as incentive. Whilst it would be too much to ask tag-team developer Infinity Ward to completely reinvent their game-engine in the interim years between Treyarch taking the reins, it would do wonders to show off any next level of Call of Duty gameplay, instead of spending their budget on putting a dog in a motion-capture suit. I challenge even the most ardent of Call of Duty defenders to spot the difference between gameplay videos of the last three instalments, outside of the various HUD elements that always undergo an annual re-skinning.