No matter what you do, you can’t please everyone so if that’s your target, then you already lost. I love your distribution but I have a small problem with it. I believe the winner should feel he or she has accomplished something. I would be very disappointed if I won a contest and I received the same rewards as the 10th or 20th person. Then I will target the 9th position because I will work less and receive the same reward as the 1st person. This is my opinion;
1st 50 steem
2nd 30 steem
3rd 20 steem
4-10 10 steem
11-30 5 steem
31-40 2 steem
41-50 1 steem