The above highlighted will help boost the development of steemit. Also, in proposing a decentralized steemed, the system could also look up into the following.
Coin Exchange: This is can be a sector among the decentralized unit where members of the community can willingly give out their coin in exchange for their country currency. This system will also help in keeping the coin value in circulation and thereby eradicating any potential fear of loosing the coin during sales.
Advert and Marketing: There can be an option in which a steemit user could be able to showcase his/her entrepreneurial skills to the larger community without probably making it as a post. If a sector can be carved out from steemit international for this purpose, then more and more people will join the community and it won't be about the coin alone but also about individual development.
Creating steemit app: A steemit application will make the platform more user friendly. Of course, there is an existing app on it but a better and more lighter application can help boost the economy of steemit community.
I support a decentralized steemit system @liberosist
There's an Internal Market on Steemit already. Currently it has only Steem and SBD pairs, but with SMTs incoming, we'll probably see a full fledged market. That said, I don't see Steemit getting into fiat or BTC exchanges - there are enough exchanges that do that well.
Marketing is of course key.
Steemit apps for Android and iOS are in development, and due a release soon.
I am looking at a direct exchange where steem/sbd will have a direct autonomy of exchange to local currency instead of converting to bitcoin before eventually turning it to any local currency or probably using it to buy goods directly.
It is possible to create SMTs along the tether or openledger (from bitshares) model where placeholders (IOU) for fiat, BTC, etc. can trade on the internal market once SMTs can. I don't see Steemit Inc doing it (though who knows for sure), but it doesn't have to be them, anyone else can do it such as blocktrades or a new player.