Hi Bandit, don’t know if this topic is still on the go or not but my idea would be not to alter it too much.
Keep the World Cup format but start the opening round on minimum stake, whatever that player wins gets that amount wether they beat their opponent or not. The round winner then progresses to the next stage and you up the stake to the next level, repeat that until the final. You don’t have to make it too max stake in the final as players are winning every round but it’s kept reasonably cheap in the early rounds.
Any bonus buy game works here.
Your money, just a suggestion.
I’d get automatic entry of course ??