What would this solve? When will we do once we reach 8MB limit? what wil we do once we reach 20MB limit? are we just buying time with this?
It is just buying time. Increasing the blocksize now is a solution that will buy enough time for people to come up with a better solution for this issue when it actually becomes a problem.
You are missing one of Gavins most important points. I will automatically increase by almost 50% each year, to follow bandwidth.
"Scaling up a little less than Nielsen's Law of Internet Bandwidth predicts for the next 20 years? (I think predictability is REALLY important)."