The Lindens specifically state that the "Feature Voting System" on the second life website (http://secondlife.com/vote/) is not for Policy suggestions. I propose that such a feature is implemented on the SL website so that people can publically propose and vote for such policy changes, adding a much-needed element of public opinion on the subject of SL policy.
It could be structured exactly like the existing "Feature voting system" but for policy issues. Popular suggestions would not force Linden Labs to accept the suggestion, but at least it would help indicate the user opinion on these matters (or perhaps they dont care... or, indeed, actively want to exclude such indications???).