Scooely, for those in your player base that can’t afford or simply do not want to pay for SR refills, 24-hour tournaments are difficult to get far.
My suggestion is having 2 simultaneous tournaments - one easy, bronze through gold - one hard, gold through legendary. Completion rewards would remain the same but there could be 2 ranking systems. This would help out all players get farther and really help newer players get some decent rewards. At least for me, I’d be more inclined to buy refills with having a better chance of finishing it.