What matchmaking needs is team doubles.
would be so nice (:
Yes it does.
However I don’t think it will be as good without it being ranked and without smaller maps.

It needs player-made map, then we can have Team Doubles. Not many vanilla maps are Team Doubles friendly. 
Haven, Abandon, Solace, and the new map wreckage then make 1 - 2 player made maps and its set. They are all good maps for 2v2s with sprint. All those maps really isn’t that big (TBH).