Disagree. I'd put that pretty low on the list

1. Securing Wallets by default (watch the chaos when a virus/trjoan hits)

2. Mining pool operator gains 51%, or colludes with other mining pool owners to get > 50%. Needs to be a switch to the distributed style mining pool, where the owner does not have the same amount of control (cuddlefish idea, but enhanced a bit)

3. Network defense of govt takedown/attack - allow for flexible port-switching, tor-by-default, etc

4. Headless clients with geographically diverse supernodes like fallback list (to allow for true mobile apps)

etc...somewhere down there is the .02BTC issue. It's pretty simple, if 1BTC is $20, people will have no problem spending 2-3decimals out. In fact the client should be enhanced to prevent decimal entry errors, by giving a readback/confirmation screen with guidelines.