I've been playing Call of Duty games on PC (mouse/keyboard) since CoD2 in 2005 (I'm 45) and I purchased them all since then (exclusively on pc).
Like many players I guess, this is an addictive love/hate relationship.
So far of all games I played over the last two decades, CoD (multiplayer) is definitely in my top3.
I don't play new game modes, I mainly stick to tdm/kc while playing solo and will expand to dm/hp while in a group w/ buddies. 7 mins average for an adrenaline-shot game, can't beat that when you got a full time job & family to take care of. No need to spend 1000+ hours to gear up, you can kick some a$$ right from lvl 1 provided you got some skills.

BO6 is fast-paced and the omnimovement is a great addition, as a player who enjoys rushing -and clearly better at moving than aiming- I really appreciate.

Of course there are a few things that would need to be reviewed : aimassist is a bit too strong. I don't mind fighting controllers (I only get that in my lobbies anyway...), but clearly the tracking is too op, that's really striking on killcams. Even top pro players like FormaL are complaining about it. He made a video where you can see Scump and others on old CoD vs new ones (they were already pros at their best) and the aim had really nothing to do, plenty of bullets missed...At worst, add some "device filtering", I'm sure a lot would appreciate.

Cheaters :
Dev and the editor really need to do something here. Most of my games are ok, but there are way too many people who seemed "really good". Of course in 20y the skilled population on the game has clearly increased, and some kiddos w/ controllers are really good, but still...there are manyyyy YT videos in which you can see players bragging about their cheating devices or soft, some of them paying up to 30 bucks per month to play w/ them (I mean wtf !!..). Vanguard on Valorant seems to be the most effective. Who cares (apart from cheaters) if it's intrusive on your device if it's to guarantee the game will be safe...

EBMM :
Regarding EBMM, the main prob i see is that your weapons damages are quite inconsistent. In previous games up to BO4, every time I stopped firing I knew I'd get the kill. Here, this is quite random : sometimes i have a good run on multi games and suddenly my damage feels like it dropped to 50% of their initial value...I stop firing thinking the ennemy's down but no, the guys is alive and only needs a couple of bullets to kill me. This can be quite frustrating and if you're used to the game w/ a good level you can clearly 'feel' this taking place over games.

Other than that, the overall experience is good, the gameplay is incredible and there's absolutely no FPS (played them all) who can compete on this gameplay quality. The devs have done an amazing job on this and since the last MW2 this is getting better and better (on the gameplay, as previously mentioned, some things need to be tuned down).