As of now, you can use DETO for paying 25% of your trading fees. You will need to enable the 'Use DETO to pay trading fees' option in your account preferences
. For more details on how this works, please have a look at this page
We are also in the process of rolling out other utilities for DETO. These include a DETO-USDT market making pool, use of DETO as collateral for opening derivatives positions on Delta Exchange and a DETO staking pool which will backstop our existing insurance fund.