So ever since call of duty ghost call of duty has got worse and worse every year that's because of all the advanced movement they introduced this effect all the old cool players who grown up on the roots of CoD4 back then everything was simple and easy to understand with every year after cod ghost I believe it took a huge decline in player base and this is because of all the changes they done to the game which gave a sour taste to all the players from back when CoD4 was introduced. This is the main portion of the community and yes they gain new players every year a CoD is released but still a good portion is being put off every year and if this is a growing accurence CoD won't be a "AAA title any more" but a "I wish they listened to the main player base"
The idea of supply drops was introduced into CoD Advanced Warfare and with this made those players who put money into the game a huge advantage over those who chose to not to this is because of the weapon variants that were available to those who purchased the supply drops. So new players were under a servere disadvantage and made those new players go to other games. This idea of supply drops were then released in several future CoDs but dispite the Community saying to the Devs please don't introduce supply drops they proceeded to not listen to community and became more money hungry year after year. This year they are releasing a WW2 style CoD and with this become old school boots on the ground CoD with no advanced jumping or any added content that may put off the old school users buying the next CoD. But only time will tell if they are not money hungry this year and listen to the community I really hope they don't add supply drops which first started all the hate for the current CoD's but knowing what company's do theses day with trying to squeeze out as much money as they can out the player as possible.