I've brought this up in the past already, and now that I got back to the game, I feel the same way again. Matches are just too short, making them feel less serious and also your actions as a player less relevant. A great many times there is no back-and-forth, there is no trying different tactics or anything along those lines, because the match ends abruptly, way before a team could adapt to what their opponents are doing and counter it. Mostly it's just a roflstomp, kaboom, win! Exactly NOT what I'm looking for in this game...
The only time matches reach acceptable lengths is when 2 well-working healballs end up in a standoff.
I suggest to increase match duration simply by adjusting the scoring system, and also increase match rewards accordingly, to avoid enraging the playerbase.
Matches where one team is very clearly stronger than the other will still end quickly, as they will have no issue accumulating points in rapid succession. In the meantime better balanced teams will get a more immersive and fun experience, by letting them really shell it out against one-another.
P.S.: I think a great many players that have loved and are missing the old match type (that I can't remember the name of anymore), where you had a Captain selected and had to survive as a team in multiple rounds, have loved that game mode at least partially because of this: since it was longer and had multiple rounds, you had a real chance to adapt, to turn things around, to try different approaches... The current matches totally lack this!