One of the neatest new wrinkles I saw this week was Digitex Futures. They're built on the blockchain and issued their own token - DGTX. They're using it to eliminate all commission fees on futures trading. There's a few other features that the blockchain makes possible as well.
Here's the article I saw
https://medium.com/@mobymom/welcome-to-the-future-of-crypto-futures-trading-6d9c973f8e2d

and the Digitex website
https://digitexfutures.com/

This idea really intrigues me, I think it could really change the trading exchange environment.