I am resurrecting this thread for a number of reasons: it's very valuable information to have in light of the possibility of rural hospitals closing thus greater distance to emergency care, greater danger from severe weather, and the possibility of losing health insurance coverage leading to a need to self diagnose and/or treat.
I guess the big thing that was alluded to several times, but I don't think was called out specifically is Knowledge. Taking the advanced first aid/ wilderness first aid classes ( if you are lucky enough to have them offered near you), read, study, practice, because the very best kit doesn't do anyone any good if you don't know how to use it.
Thank you to everyone who has previously posted to this thread. There is a true wealth of information shared here!