I would personally want more data, such as the % powered-down, but I can see what's happening within a few seconds looking at transfers - yes, is tedious with 100s of users.

But my point is more subtle. The aim is to help middle-ranking users to grow, and not just extract. They can do whatever they wish, they just don't get any extra help doing it. So, it is perfectly possible for an account to be permanently powering-down modest amounts and yet still be growing their BP.

I cannot remember its name, but there was a very good app for steemit, designed for curators with multiple ways of screening posts. I didn't use it a huge amount (hence forgot the name) as it was a time I was already moving away from curating towards fintech tokens. Was a good way to discover hidden gems from newbs who were being largely ignored.
Could be a dev project.