The main downside I see of this in this day and age is people who can't access exchanges and only use the Hive blockchain for storing their value. I.e. those who want to trade hive/hbd for a working stablecoin in hopes to buy more Hive next correction can't do it against HBD because that will also drop down along with Hive. This was the same problem last bull run along with FUD about USDT which made a lot of people lose a lot of money cause they just stayed in the base currency after not wanting to deal with taxes by withdrawing them into fiat.