If everyone is trying to get ROI, then curation makes zero sense. Each post gets one upvote from the curator trying to get ROI, and no one else upvotes that post because they don't want their curation to the leeched by previous votes.

Also, Steem doesn't curate posts. Steem is the backend. It is the frontend that is responsible for displaying content, therefore, forcing users to obey curation distributions makes no sense, and should be eliminated from the consensus layer.

Have you noticed how the new communities popping up don't award interest to stake holders like Steem does? Steem gives 15% inflation simply for having stake powered up. This mechanic should be removed and given to users looking for ROI. This is accomplished with SteemEngine coins via Virtual Mining, but there are many other ways to accomplish this goal as well. My suggestion was to allocate those gains to people who hold funds in the bank account (locked for 3 days rather than 3 months).