Default and competitive aren't often two words that go together. A relevant example would be your recommended items in game compared to what gets built in scrims.
A lot of us would appreciate some answers to Pillatypus' questions above.
To clarify, I was using the word "competitive" in the sense of how new players will interact with the feature relative to players that have been playing for a while. Players that are at the highest level of competitive play will obviously want to min-max every aspect of the game they can, including their Amplifier Sets. Our default sets are clearly not intended for them.