It would be hugely compelling to have a more direct funding / withdrawing route -- I've thought for a long time that it's a HUGE pain in the ass to have to exchange for BTC/BTG/ETH/LTC, and THEN to your native fiat currency (or the other way around, depending on what you're doing).

It could get a lot of people excited to earn some steem because it's easy to withdraw, but it could also make it easier for curators / long-termers to fund their accounts.

It would certainly make it viable for way more business cases as well.