I suggest
- reducing the number of strikes.
- increasing the time to maturity
- introduce more than binary options
For me this doesn't seem very useful, but I'm not a day trader. The focus is very short term.
Since we are the first to introduce exchange traded bitcoin options, we are still determining the expiration dates. Do you have any suggestions?
I am still working on vanilla options, but they could require a big amount of margin for sellers as the volatility can be extremely high. How much margin is required is still a question.