weightings in swot analysis. For example, in netflix I would say that amazon is a much stronger threat to netflix than blockbuster. perhaps you could add a drop down to the SWOT entry and that way people can vote on "weighting" for each particular strength or weakness?
Your idea is great, but instead of a weighting, we simply put the ability to "vote" the best statements higher. Therefore, if you believe one deserves precedence over another, vote it higher.