The place the rubber hits the road on this problem is that companies who would receive payment under this approach will not sign up to a system that causes their holdings of cash in the system to decay, if there are other alternatives.
Most companies that today accept bitcoin don't hold bitcoin for a while but immediately transfer it into dollar. It's not really a problem for a person who doesn't plan holding currency for a while.
On the other hand the aspect that you don't want to hold the currency for longer periods of time might reduce speculators in the market and produce a currency with less price fluctuation then bitcoin.
A couple of points that I think are relevant:
First, dividing users of bitcoins into people who spend it quickly and those who hold it obscures the more fundamental truth that all bitcoin users hold them for some period of time.
Second, all businesses have cash holdings. Larger ones have entire treasury departments devoted to doing nothing more than getting a few more basis points on that cash by active management in interest bearing accounts.
The combine to make me very skeptical that people will accept a currency that depreciates in value and is not already...
I posted a stupid question a couple of weeks ago and got some good feedback.
@ChristianKl suggested that I start building a model of hypercapitalism for people to play with. I have the first one ready! It isn't quite to the point where people can start submitting bots to play in the economy, but I think it shows that the idea is worth more thought.
Analysis:
http://www.hypercapital.info/news/2015/4/19/a-published-model-of-hypercapitalism
Runnable Code - fork it and mess around with it:
http://runnable.com/VTBkszswv6lIdEFR/hypercapitalism-sample-economy-for-node-js-and-hello-world
I'd love some more feedback and opinions.
A couple of other things for context:
hypercapital.info - all about hypercapitalism
Overcoming bias about our money
Information Theory and the Economy