I have a suggestion: Adding sub-accounts, which you control from the main account.
The reason for this: I for example write in both English and Turkish. I would love to have a subaccount in which I could only post in one language. So that my English speaking followers wouldn't be like 'what is this gibrish'
Suggested method: Sub account starts with 0 vest in it. However you can transfer power from main account to power it up.
This would help with extra account creation issues a bit too.
That could allow users to be rewarded for content created in one account. That rewards could then be transfered to the subaccount and be used in some bad way.
You can achieve this with Steem Power delegation which is already a feature. You can delegate SP right now to another account or have them as proxies for your vests.