Sort:  

I really like this idea. It can be done without any changes at all to the blockchain, just a display change on people's wallet page. The Posting Rewards are right there already:

If we could see immediately who is a high Steem Power influencer due to investment verses content creation, that would go a long way towards understanding that individual account's social capital.

Great thoughts, Charlie! Thanks for putting these ideas out there for us all to think about.