I'm very much with zminer. It asked and answered a very distinct question, whether or not the Second Amendment protects the right of individuals to keep and bear arms. We were smart to keep it narrow, the other side was stupid to push it this far.
Heller itself is not meant to shake the earth. It is meant to be used to force a change of policy in those who tried to convince we had no RKBA. It will be the basis for twenty years of challenges and re-interpretations. It isn't the end, it's the beginning.
I don't like the fact that 4/5 justices didn't agree with it, but at the same time, part of me says they dissented because they knew it would pass and they wanted to get the dissenting opinion published. Of the dissenting opinions I recall directly, only Stevens actually said he didn't think it was an individual right. Others didn't like the grey area it opened, in particular the 'common use' idea, for precisely the same reasons we DO like it:
"The Breyer dissent also objected to the "common use" distinction used by the majority to distinguish handguns from machineguns: "But what sense does this approach make? According to the majority’s reasoning, if Congress and the States lift restrictions on the possession and use of machineguns, and people buy machineguns to protect their homes, the Court will have to reverse course and find that the Second Amendment does, in fact, protect the individual self-defense-related right to possess a machine-gun...There is no basis for believing that the Framers intended such circular reasoning."[37] (Other commentators have agreed with Breyer's criticism, but argued that the Court therefore erred in not overturning current machinegun restrictions.[38][39])"
Stevens also grumbled about Stare Decisis, basically being unwilling to overturn Miller out of the principal that standing decisions should remain umnmoved without compelling reasoning. (Ignoring that Miller was an incomplete ruling on an ex-parte hearing, and that there were recently conflicting rulings in lower courts which needed resolution.)
But the above posters have posted some very important things. Look at the time between Plessy v ferguson and Brown v The Board, Miller and Heller, and tell me how you possibly think Barack Obama can pack the Supreme Court when the two justices most likely to retire are liberal, get the RIGHT case up past all the LOWER courts within his presidency, AND get a favorable ruling? This takes DECADES, not a few years.