I think the game should have daily leaderboard because it give chances for the new playet to appear on the leaderboard. Beside, the daily leaderboard will increase the competition, that will make the game more interesting .
Good idea! We have a bigger feature coming which will replace the leaderboard and allow you to compete in domestic, regional, continental and global leagues.
But until then we will introduce a weekly leaderboard and keep the current leaderboard as an “all time” leaderboard.