The Mimas protocol smart contracts are forked from Compound protocol, which is a deeply battle-tested protocol with minimal changes. Mimas protocol smart contracts were audited by CertiK.
75% of all protocol fees are distributed to MIMAS holders through locked staking. Besides that, MIMAS is Mimas Finance's governance token, so it will become a voting tool once the protocol is at a more advanced stage.
Shortly after the launch, you'll be able to stake MIMAS directly on the Mimas app. Two staking options will be available there; a 6-months locked stake that yields 75% of protocol fees and MIMAS rewards, and a non-locked pool that yields only MIMAS rewards.