I am not trying to defend them because I'm a member of their signature campaign, as far as I can see is that Shuffle is improving regularly.
They add many new things in the site (especially promotions) since they were announced here almost a year ago.
I have to agree with your opinion about the wagering contest and maybe they need to have more winners for the weekly race.
Hopefully they will hear it and make an upgrade for the wagering contest, maybe 50 winners weekly would be more interesting.
Top 20 players to receive rewards is almost good already if they will change the distribution percentage as suggested by the above post. That 83% for top 5 is overkill which doesn’t give much room for rewards for low rank players.
Top 50 or top 100 is much better because I saw some casino that offer top 100 winners while low ranks received a combination of small cash and free spins. The current rewards of 100K will be good if split to more users to encourage everyone to wager even for just a the lowest spot because it’s achievable.
It somehow give motivation for players to be competitive and reach at that top spot, But somehow could kill the interest of casual players since they might think that automatically they can't qualify know that they only gamble depends on their mood and don't use huge money to gamble.
Although its good to lower down at what you suggest but maybe they don't need to do it now.
Maybe they want people to became more competitive since more money spend is more revenue to came into their casino.
The problem on this kind of competition is few whales can dominate over and over the weekly tournaments while the casual players will still play the same slow phase unlike when the casino make the tournament open even for low bankroll because it can increase competition even in lower level that will result to more traffic in the casino at the same time due to casual players can become active players often due to competition.
But this still up to the Metawin management to decide whether they will adjust it since they are open for revamping their tournament according to players interest.