I hear where your coming from; though I have teenage children who game and a wife who also enjoys her laptop time; and its an interesting perspective to look from but look at other titles for that quick "fix" your needing. At this stage I don't see any benefit in the devs investing in making/creating/coding whatever new small format game types/maps for now or the future full release. If it is a topic that garners enough interest and support from the community leave it in the hands of the community mod makers and map makers.
As for titles these are ones that I play or have played in smaller player count area that I have enjoyed:
TC Rainbow 6 Siege for some fast paced 5v5 . Really good support for a Ubisoft title and coool toys.
Rising Storm 2: Vietnam 16v16 servers. Been a long time fan boy of the original Red Orchestra mod to the current game. Brutal Shooter
Player Unknown Battlegrounds with 3 mates for a round or 2 is perfect for the cheese factor. CHEESE FACTOR lol nothing like Squad or the games I have previously mentioned but can be just plain good fun.