After you start your round and all 50 places are filled, you can see the leaderboard.
I know from experience that there are players who wait until the 50 places are filled to start their round, so they can see what they need to score to get in the top places.
I don't think this is right. I think you should only be able to see the leaderboard after you have finished your round.
I also don't think you should be able to play your round up to 12 hrs after you sign up.
I think when you sign up, you should have to complete the round within say 2 hours.
If you can't play the round within that time, then don't sign up for that particular RG.
Just my 1.5 cents (2 cent before tax)