Once you have made an affinity map and clustered your ideas, it is time to start filtering them down. There are many ways to do this, some work best for a small list of ideas, others work well for a large list.

The SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis is a traditional, but very effective tool to zoom in on one idea and really find out its strengths and weaknesses. It can be made to work well with the design criteria scorecard in that respect.