STEEM needs only two sinks.

The first one is holding steem power for RCs. This is already working today.

The second is burning STEEM to advertise on STEEM. If bidbots burn 10 to 20% of their earnings, it will be an amazing sink for STEEM. Yes, investors will get 10% less ROI, but surely they wouldn't mind if it makes the supply of steem go down, leading to higher prices.

This can only be solved in a centralized way (or at least it's way easier). Please talk to @yabapmatt about that he can make a big change through steembottracker.