my idea is like bancho select a random beatmap for 3 difficulties, Hard(2-3*), Insane(3-5*) or Extra(5-6 or 6.5) and you only have one opportunity and it will have a special scoreboard for the daily challenge and it will change every 24 hours
The time zones are different for everyone so there might be discussion about when those 24 hours start or end. Also, where would you place that chart. Every map has its own charts and if we just add it to the tab with chart displaying options, nobody will look at it. I like the idea but I think that after a short while everyone might lose interest in checking the daily map and would rather continue their hunt for nice plays or pp.