They did have something similar to a draft mode. It’s been a while since I played but you would build a deck from a series of options, usually 3 cards or 3 synergized subsets of cards, and this would repeat 15(?) times. Then when the deck is built you queue against other constructed decks.
People would just reset a run if their drafted deck didn’t come together.
High scores runs are for people who want to optimize the fun out of the game.
Then there are fun things for everyone else.