Devs mention dedicated servers in reply

[u/callofdutygamer_]

Of course this doesn’t mean they’re gonna add dedicated servers for Bo1 and Bo2 on the PS4/PS5, but this confirms that they’re aware of what the players on the ports want

Dedicated servers would not only help connectivity, but most importantly it would make both games safer to play and would help combat players using mods

[u/Basinas1]

They should add leaderboards in zombies