One other thing I discussed a while back with Vitalik was creating a storage/execution cost gauge. Meaning the gauge measures the size of your contract and the size of each of the indidividual executions in the contract and comes up a quantity of ether it would take to execute each of those contracts executions. What this allows is for users of the network to visualize a cost comparison of using Ethereum vs their current system. This would be highly important but with the volatile price of ether the gauge would have to take that into consideration. It would also need to pull from miners fees and set an average.