I have an idea that is really needed in the Defi and entire crypto space, and Kleros is the idea candidate to implement it.
Defi/crypto projects could lock up a certain amount of Usdt/Usdc/Dai/stablecoin with the kleros court that would be made transparent to everyone, also these funds can gradually increase.
When investors have problem with their projects they can bring the project/team to the Kleros court to have it resolved, if the accused/project is guilty, path of their locked up fund will be used to pay the investor/investors.
This will help increased trust level for those projects that locked up funds at Kleros court and also protect investors.
This I believe is one of the major pressing needs in the crypto space.