I like it. Another idea I had would be to make the client show the balance multiplied by some derivative of network hash rate. Since network hash rate is pretty closely correlated to fiat exchange rate (through mining profitability) this might result in a currency that was more easy to reason about for most people.

(instead of a coin being worth 5 times as much as when you bought it, your wallet would contain ~5x as many coins, with the balance increasing and decrease with market volatility)