Commonly encountered decks - Option to refuse to play against
I have encountered insane amounts of people that seem to be playing copy/pastes of the exact same decks (e.g. white life gain / milling marine arthropods because apparently the card title is forbidden)
I'm not saying that we should be able to go through opponents decks before playing (although you could introduce an advanced mode for that).
What I am suggesting is:
A dialog before the game that would note how common is the deck among players + it's colours + the ability to REFUSE to play against.
You've got algorithms for everything - it could be done.
you could measure how common are various card combinations, excluding basic lands, and what percentage of the players are playing them.
Playing against the same powerful decks over and over is no fun, and having only the option to concede is a bit of an insult.