I think one of the coolest features of this broker is ability to open cryptocurrency trading account and fund it with crypto.
Broker gives clients opportunity to use USDT as base currency of account. And USDT can be deposited to account by crypto transfers.
USDT exchange rate doesn't differ from real dollar exchange rate, so there is no need to worry about conversion of this currency. And at the same time, USDT has many advantages in relation to the real dollar.

So for me this feature of broker is the most significant.