I have been thinking about this more and more lately. There are most likely scenarios where users/customers are more than happy to pay a few percent depreciation. Possibly one of the biggest strengths of bitshares is that we can have many versions to see what works best. One example of a customer which might not mind is a high frequency trader looking for lower fees. In that particular case a few percent a year may be much less than a fraction of a percent of thousands of trades. The other benefit of this idea is it incentivizes a different type of use. Instead of holding an asset users would only find this valuable if they are making lots of trades, and thus generating lots of fees...