What is your personal favorite multiplayer game and what is it's fatal flaw?

Currently it's The Finals, though I have been taking a break. I need to fire it back up to see if my biggest issue with it has been fixed... It was the fact that the netcode was garbage and the entire match could be completely out of sync to the point that what you actually see other players doing is nowhere near the reality of what is actually going on in the game.

The dev made a post that they knew about the problem and even identified the cause, but as of the last time I actually played, it hadn't been fixed yet.

Second place is Crossout. It's essentially F2P Twisted Metal but you build your own vehicles. The biggest flaw with it is the grind. It takes so much time and rounds played to advance to unlock new parts and earn resources. I've been playing for a month and I'm only level 11, and still stuck playing the super basic starting modes until I have enough "PS" to open up the others. 😮‍💨 I think it might actually be P2W with how other players at the same rank can have full blown mechs while I am still stuck with the shittiest car parts going off the normal, free level of progression.

Then again, it also had ABSOLUTELY NO TUTORIAL beyond the basics of driving your car. It doesn't explain any of the menus, how to build, how to share, etc. I could just be missing something.

Rocket League. I find myself going back to it because I like the concept but you need to have chat turned off completely and even then the games usually devolve into one or more players throwing a hissy fit a minute into any match because something didn't go perfectly.

Palworld.
\ Fatal flaw: endgame content (oil platforms, summoned raid bosses, haven't checked the newest 0.6 stuff yet) are fucking bullshit playing solo or duo with 1x (default) damage

Battlefront 2 : cheaters, and small player base in Australia.

Warsow : never took off in Australia, not enough players.

Overwatch : role queue.

Left4Dead

Fatal flaw: Versus mode (PvP) with random strangers is almost always awful. Only well-balanced teams of roughly equal skill can have a good time, which is unlikely when playing with randos.

As opposed to the co-op campaigns where it's OK if some players are better than others because we're all on the same team and a good player can carry several n00bs.

Super Mecha Champions: Servers shut down, game is no longer playable 😭

Overwatch, and the flaw is everything they ruined it with in almost every update since ₂₀₁₇2018. I loved how tactical and strategic it was for a shooter, and the only problems it had were the turrets. Everything they have done has been to make it less strategic and more lobotomized and left click focused.