This is a step in the right direction. Now take more steps, they should be trivial given momentum.

Examples of things to improve:
* Voting on values and beliefs separately.
* Voting on things that are not multi-choice, such as long a continuum or a sorting order.
* Have voters give a probability for each choose rather than a single best option.
* Vote on meta things like what type of problem it is, and have he votes of those who have been better at that specific type of problem count more.