You've just highlighted my exact concern - Modern Warfare had a pretty limited map pool at launch hence why the same maps kept popping up. It's gonna be even more limited in Cold War plus the maps we've seen already (half of the final count) weren't exactly great either.
Other COD's definitely weren't as bad as this - MW2 and BO1 both had way more off the bat which were all 6v6 appropriate and were designed to accommodate all the other modes on offer. It was a fine and varied selection. Nowadays the devs are not only giving us less content at launch, the maps that are there are split based on the playlist type so there may only be six 6v6 maps in Cold War.
We should really be getting at least 12-15 original 6v6 maps for starters and if the playlist modes do split the maps then there should be 6 or so ground war on top - 2 is just lame really.
Off the top of my head:-
MW2 had Afghan, Terminal, Highrise, Karachi, Underpass, Estate, Derail, Quarry, Favela, Skidrow, Sub Base, Invasion, Rust, Rundown, Scrapyard, Wasteland - that's 16 off the top of my head in the base game and I've probably missed a couple. Black Ops had Jungle, Summit, Firing Range, Nukertown, Array, Crisis, Cracked, Hanoi, Havana, Radiation, Villa, Grid, WMD and Launch. I've probably missed one there too but that's about 14.
A poxy 8 maps for a premium multiplayer FPS game in 2020 is pretty disgraceful really and we already know recycled content is coming once again.