That's the way to do it.
I don't believe those who are taking it all out and not powering up can't spare 10% of what they take for a power up...I mean, what did they do before they were on Hive? Anyway, you know my thing, no regular power ups means they'll not get my vote so I guess they costing themselves in more ways than one.
That is kind of my thought as well. They never had it to begin with, so what is 10-20%.