1) replace wet insulation
2) insulate all water pipes
3) re-direct all run off water to keep the crawl space dry
4) redo the windows with winter glass and summer screens.
Here I am in my work shed drilling the Plexiglas on the winter windows!
(Can you see Lula by my feet or does she just fade into the blackness? - of course she was right by my side through the projects but was not allowed in the crawl space.)