So as many of you (including myself) believe, the playlists are a bit watered down, with sometimes less than 2k players in a given playlist at high population times. We need to condense some of these in order to make room for other UNIQUE playlists! My thoughts;
RANKED(all RANKED playlists feature a default 5 sec spawn delay for all game types.)
Infinity Slayer - 4v4 Slayer.
NEW Infinity Objective - 5v5, CTF, Oddball, and Extraction only.
NEWArena - Classic Lone Wolves, includes Slayer, KOTH, and Oddball, replaces Regicide as the FFA playlist.
SWAT - Leave it, but add SWAT Magnums as available variant and Frag grenades to the maps.
Team Snipers - 4v4 Slayer, preset Sniper loadout with no AA’s, Beam Rifles on map.
NEWInfinity Hardcore - 4v4 Slayer and CTF played with MLG settings found here Watch the best in esports live - MLG
NEWInfinity Doubles - 2v2 Slayer. Map rotation includes Haven, Adrift, Abandon, Relay(the Impact pre-forged map), and Settler (the Ravine pre-forged map).
SOCIAL
Social Slayer - 4v4 Slayer and Team Regicide.
NEWSocial Objective - 5v5, includes CTF, Dominion, KOTH, Oddball, Extraction.
Big Team Battle - 8v8, includes Slayer, CTF, Dominion, and Extraction.
NEWFree-for-All - Classic Lone Wolves, includes Slayer, KOTH, Oddball, and Regicide, replaces Regicide as FFA playlist.
NEWGrifball - GRIFBALL! 
NEWMulti-Team - 2v2v2v2 Slayer.
Rotational Playlist - Slot for 343i’s weekly playlist updates, if they even continue doing that, for things like DLC playlists etc.
NEWInfinity Blowout - 8 player random assortment of socially geared gametypes like Action Sack, all with preset loadouts, including but not limited to;
Team Rockets - 4v4, all players start with bottomless clip Rockets, no AA’s or perks.
Team Swords - 4v4, all players start with bottomless clip Energy Swords, no AA’s or perks.
Boxer - FFA, all players start with a Plasma Pistol, weapon damage set to 0%, melee damage set to 200% and player speed set to 150%. No radar and double points for Assassinations.
Fiesta - 4v4, all players spawn with random primary/secondary/grenades, random ordnance on map that cycles every 1 min, personal ordnance disabled.
Race - KOTH variant on community created and voted race track maps, first to successfully complete 3 laps wins. 0% player damage, played with Mongooses, players can melee opposing players to push them off the track.
Flood - Same as current settings.
Discuss! By condensing come playlists we have room for more. What would you like to see as a stand-alone playlist or variants in existing playlists? What would you add to these playlists? Show your support by thanking this post so I can present a numerical value to 343i.