Delta Exchange has very rare features in the derivatives market. As an example, you can write secured cash puts options there. This is not available on the biggest exchanges (Binance, FTX) outside the US afaik.
This can hardly be called an advantage of the exchange. This is a very specific type of trading and most will never use these derivatives trading tools. The same dubious advantage as trading with x200 leverage. Yes, there is, but few people are interested in it. The same is true with these options functions.
I'm sorry, comparing trading with x200 leverage on future with writing secured cash puts options make not sense. Especially when dealing with Bitcoin and you know what you are doing.
FYI options trading is harder to understand at the beginning than future trading. That's the main reason why it is not as popular as future. However, it offers many advantages over future in many situations. Many veteran traders are only trading options. Maybe less in the crypto because the market is very young.