On top of everything that has been said, from my experience,
MW3 (2023) needs to continue to incorporate infected like MW2 (2022) did
include descriptions for the calling cards and emblems that have been earned/awaiting to be earned (like Cold War did)
If including zombies, they should have a round based gameplay on top of the warzone type zombie gameplay (although warzone type of gameplay was very intuitive)
And the developers need to have more time to develop the game from whoever gives the orders. At the end, we as gamers don’t understand the stress that the developers go through on meeting timelines.