To stop the flow of easy unearned money, randomize you need to change the current betting system. If you haven't noticed, people purposely throw the game to a predetermined winner. What would be better? Let us bet on stars, the "Stars support" might actually mean something by putting your money behind it.
That also would allow you to remove the betting limits. Letting people stake 100s or 1000s of T would make it very interesting.
Edit: In Stars the bets would remain secret until after the game ends.
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