That was a fast 1st map ... :O
PS: I should correct myself - the TWO first maps were fast ...
Why would they change it? Their composition is strong, solid, pays to their strengths. It's an FPS - you need to surprise when you can't outplay. And they definitely have the skills to outplay - they constantly show it online. I think their problem is psychological. They underperform on stage. Guess that's what they need to work with. When you lose two series in 3 months you don't look at your gameplay you look at the circumstances first.
3-2 isn't a brick wall. And it wasn't some kind of a reverse sweep, where one team "figures" the other. You are putting too much stock into "meta analysis". This is not Starcraft where a battle between units is decided by the numbers in the spreadsheet. It is a game of execution. Misfits won this tournament with a Widowmaker, although it almost always felt countered from the start - especially considering D.va's buff. Roadhog's hook kills no matter the patch.