suzerain: add TODO post-r44243

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44244 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: #3012 diagram-in-progress

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44245 0bd85f0b-c151-43b9-a1e9-27231104551f