3 lane maps are great but I'd also want a variety of maps like we had in BO, MW2, MW3, COD4, WAW etc. Favela had multiple routes, elevation and excellent long sightlines. Sub base had the same plus a lot of outer action and Afghan offered multiple ways to play and significant flanking opportunities. Now days it's start the match and go either left, right or center and maybe chuck a nade or get ready to fire straight ahead. The MW2 maps weren't forced 3 lane maps; they were just well-designed and varied. Even SnD has become a bit of a redundant mode in recent COD's because the maps just don't offer versatility. Traditional sniping has also been thrown out of the window and replaced entirely by quickscoping.
I can't remember the last time we actually had a COD game with an iconic map. Nowadays they seem to be very symmetrical, either small or small-to-medium or just long and narrow. A lot of these modern COD maps are built with eSports in mind where the action is pushed into 3 lanes which diminishes different gameplay styles and brings aggressive sweaty gunplay to the fore.