I think rarity is only important for people who are in control of much of the total supply.
For the average user stability over time is important since nobody wants to be the guy who bought a pizza for "10k btc".
On the other hand nobody wants to be the guy who sold tons of pizza for "only 10k btc" each if history went differently.
The key factor for success is to be able to exchange the currency for goods and services at a fixed fiat like exchange rate.
The worst case scenario would be if people fear to loose money if they use the coin to pay stuff with.
Important is to find a way to increase the supply without devalueating the existing supply.
In other words this means we have 100% supply and add another 10% which is evenly distrubuted to all accounts.
Now we have to make people give those new 10% they received away into the market.
I am not aware of how to make people give this additional 10% away but if there would be a market dedicated for those fresh coins it could work. I can imagine either something based on crowdfund mechanics or some sort of monthly auction style selloff.
if nobody bids there may be no demand and if nobody sells people want to keep their coins and no new are issued. maybe such auctions shall require manual intervention to remove own coins from while devalueating dead accounts.
Last edited: Mar 13, 2016