[SilasX]

Yes, it's easy to penalize hoarded money. The hard part is penalizing substantively hoarded money. If I just make sham exchanges back and forth between some ring of addresses that I own, then we're right back to square one.

Does it do anything to distinguish sham transactions from real ones? Or have any theory about the difference? If not, then it's not doing anything novel.

(I know you're not the advocate of this, just a general reply to technical solutions to low money velocity.)