Battlegrounds needs a ranking system, and it needed it yesterday. Without a ranking system, the teams are horribly unbalanced. While good even fights happen occasionally it's usually one team dominates the whole match and that isn't exactly fun for everyone. It's fun for the team that's winning, sure, but not for those losing.

Now then before you say git gud or something like this, a well designed game is fun for both the winner and the loser. It's an important part of good game design, and while this isn't a make or break kind of thing for a game to be fun for the loser it definitely helps people come back for more. In a 4v4v4 format where one team just dominates and everyone else is getting spanked no contest, that means 2/3 of the players are likely not having fun in that battleground. If people aren't having fun with the content they'll likely not do the content as much which will mean less people queueing for battlegrounds and suddenly all of the existing problems (the non bug ones) are made worse over time.

Edit: This is coming from somebody who wins about as much as she loses. I'm just tired of uneven fights.