I happen to think we can do better than Gavin's idea. I like the idea of trying to come up with a solution that works with the blockchain and adapts over time instead of relying on Gavin, or NL or whomever. The answer should be in the blockchain.
This.
To imagine I (or anyone) can predict the future would be engaging in hubris.
Thanks to Satoshi we do not have to predict anything, because the block chain will be there, in the future, telling us what is needed.
I've offered one option. Heard one good criticism and responded to that with a modification that I think will resolve the concern.
Then outlined one research task to help further refine this option (regression testing with the block chain).
There is more work to be done here, that much is clear. There are graphs to be plotted, data to be crunched, and code to be written. There are a LOT of smart folks engaged in this, who else can step up with a critique, or spare some cycles to work on the data?