I seem to recall something like a development matrix was presented by Erin S. (or was being developed, or something) several years ago when the Board last worked on a Strategic Plan (the strategic plan should be filed under Documents > Board on the OUSA website, where the Documents menu is at the bottom of the page below the wide banner).
In addition, you should also be aware of this
skills circuit page created by Erin, which you may or may not want to incorporate.