May you consider adding mBtc as a coin to bet in without convert money to fiat?
I think that like me many other don’t want to bet against BTC price.
I agree with your suggestion. Betting against the price of BTC due to its extreme volatility is both advantageous and disadvantageous. mBtc would solve this problem and op should consider adding more cryptocurrencies like LTC, Doge etc.
Usdt could be used as a workaround in this scenario, but mBtc is a better solution in my opinion.