Alright, gonna try and revise the playlists again.
Rumble Pit*
8-player Free-For-All. Slayer (possibly Infinity), Oddball, Regicide, potentially King of the Hill?
Team Doubles*
2v2. Mix of Slayer and Objective. Uses relatively "classic" settings such as on map spawns, flag return times, etc.
Infinity Slayer
4v4, same as it is now, maybe bugfixes.
Team Hardcore*
4v4. Mix of classic/Slayer Pro with revisions and "classic" objectives, so probably something like Team Slayer Pro / Regicide / Classic CTF.
Team Deadeye*
4v4, SWAT/Snipers.
Infinity Objective
5v5. Infinity CTF, Oddball, King of the Hill.
Big Team Tactical
6v6 or 7v7. Dominion and Extraction.
Big Team Battle
8v8. Mix of Slayer and Objective.
Flood
12 Players
Grifball*
4v4.
Double EXP*
The experimental 11th "rotational" slot, constantly offering Double EXP. Could host things like Race. Also used for the DLC playlist when map packs come around.
*These playlists may feature custom maps.
If they REALLY want only 10 playlists, Team Hardcore becomes Team Slayer Pro / Team Snipers / Team SWAT leaving Classic CTF to only exist in Team Doubles, and sadly doesn't leave a spot for Team Regicide unless you want to clutter up Objective even more.