First I like to say that the Quickplay playlist should include all/most game modes.
With that said. Many of the game modes inside of this playlist need their own playlist. We already have teams slayer but we should also get
-Team objective (CTF, Oddball, King of the Hill, Territories, stronghold)
-Attrition (with variants)
Team slayer should also get more variants of Slayer added to it (Default, BR slayer, Banished Slayer, Swords, Shotty Sniper)
On top of that, they’ll obviously be mode-specific challenges that’ll be further tedious to complete now more modes are being thrown into quickplay as oppose to giving them their own dedicated playlists.