So...because BO4 MP is not a shooting gallery, it's complete trash?
I never liked CoD MP precisely because it was mind-numbingly dull to run around shooting at opponents with the defensive capacity of a paper cut-out. Shoot'em in the toe...dead. Get shot it the finger...dead. Skillful aim meant nothing, except for sh!ts and giggles. Fast reactions meant nothing due to lag compensation, so it didn't matter if you were more skillful, you got punished for having a better internet connection. Every engagement was a lottery.
Please explain the part about how BO4 is the more casual title with manual healing and higher TTK? You can't just ape around and your KD's no longer 5+ so the game sucks, did I get that right? Blackout's a more hardcore mode than anything CoD has done before, that's definitely not targeted at casuals.
The only other CoD game this generation (I haven't played WWII yet) that I found remotely enjoyable is BO3. CoD has traditionally been little more than a twitch shooter where the first guy to pull the trigger wins. Level up your gear and the power gap increased substantially for vets over noobs. At least in BO4, the noobs have a fighting chance to bag some kills with a decent weapon right out of the gate.
Every criticism thrown at BO4 can be applied to earlier titles. Bad spawns, poor netcode, casual gameplay, unbalanced weapons, OP killstreaks, poor map design, strong AA...we hear it every year! I get that AA is strong, but it's been strong in every console CoD, so I don't consider it a factor given everyone can use and abuse it. Don't like it? Turn it off and make the game less casual.
The gaming industry is progressive - if you want the same dull crap year after year, CoD has been the go-to franchise for a decade. That's manifested in both declining sales and franchise fatigue, which is exactly what you're describing.
At least this year Treyarch has tried something new in Blackout, along with mixing up the game mechanics in MP. That has attracted a whole new audience to the franchise that otherwise wouldn't have touched the game, myself included. But it comes at the cost of alienating core fans. They're tired of the same thing year-in, year-out, so you can't have it both ways.
You knew what you were getting yourselves into with BO4, you played the beta. Without the changes to core CoD gameplay, BO4 would be another generic brown shooter in a long chain of generic brown shooters that fanboys just can't help but buy, then complain endlessly about. If you don't like the games, why do you keep spending your money on them?