Make it a bit more like the format for Bingo in that you have 4 cards on display at once and then have the ability to auto scratch either 1, 2 3 or all 4 cards at the same time.

Other games have the ability to do multiple plays at once (like Bingo with up to 4 playable cards at once or slots where you can select multiple auto-spins (5, 10, 25, 50 or 100) and it would be useful to have a similar option for scratch-offs