Something that occurred to me regarding this: while it makes sense as an "optional roulette", from the repeated conversations over the also-optional MSQ roulette it seems that some amount of players see the daily roulettes not as something to pick and choose, but that every roulette is something they should do / must do / are entitled to the rewards from every day. Whether the attitude has any correlation to their skill level or not, it's likely you'd get those players and not just those who want the challenge.