I say, completely decentralize token creation and let anyone and everyone issue their own tokens by just a few clicks of a button.
The team working on Golos has announced that both of these will be implemented. I suspect that Steemit will do the same sometime next year, after the Communities feature will be implemented by the end of this year.
Support for UIA (user issued assets). This means that you can issue your own tokens (not smart coins) and use them on our blockchain. You can find examples of the implementation on Bitshares.
Support for Smart Coins (coins backed with different assets, as collateral at the choice of the creator represented by Golos tokens).
I would only let people do that when they know what they are doing. Say SP > 300, reputation > 70 just as an example.