If we do end up playing Turf War for competitive (or part of it), I'd like to suggest this/throw this idea out there:
Have the winner be determined through the cumulative total of Points (visible underneath the percentage underneath the result screen) from the x amount of rounds, instead of winning the best of x matches.
In this way, even if a team loses the first x matches by a little, they still have the possibility of winning/catching up if they have a dominant match later on.
Also having it be cumulative makes it so people will play up until the very last second, instead of just quitting the current round after being pushed back to their base with no way of winning at that point. Every single bit of turf would matter. People may also attempt to guard a large portion of the match with best out of x matches, attempting to secure an easier win. Cumulative totals makes it so that that strategy is not as effective.
Turf War is won through covering the most turf, so having cumulative totals would accurately represent and encourage the mode, unlike having it be best out of x matches. Best out of x matches encourage a different type of play (more kill based than covering turf), which more suited for ranked battles in my opinion.
Considering each match is ~3 minutes, and lobby time would probably be around ~1 minute, I'd suggest having 7 rounds in each squad battle, resulting in each battle being around half an hour.