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Currently the idea of having poker directly on-chain is in the early stages and my idea is to have an option for people to create their own tournament.

This is what I have initially thought of:

The ability for the host to determine prizepool for freerolls and participating players should be able ro add to the prizepool if they want to do so.
Tournaments with fixed buy-in should have fixed paid finishes (determined by the host and number of participants) or top x% (also determined by the host).

Both paid tournaments and freerolls will have x% fee to the house from either buy-in or prizepool

Sounds good. I will play if I don't have to do any identity verification stuff beyond HIVE (eg, email address) and I'd highly recommend integrating with Keychain for log-in if you can.

If you have people promoting tournaments on HIVE and running on HIVE they'll probably be able to make their fee from upvotes. A number of relatively benevolent whales might even sponsor new on-chain gaming activity with some fatter upvotes. Good luck!

The game will by on kryptogamers, where there is login with HIVE keychain. They'll implement poker if I (or we) can come up with a good way to minimise collusion.

Thank you for all, I'll go and see if they think the reputation restriction is a good way to go about it.
Hopefully this onchain poker can become a good thing