Here in central Oklahoma we don't get much of a fall flow/crop. This year could be a little different since we have had so much rain the flowers may be in bloom/have more blooms than normal. But there is not a lot to do with the hives in the fall, other than monitoring their honey/pollen reserves to make sure they have what they need for winter.
I totally agree that it is much better for the bees nutritionally to leave as much honey on the hive as you think they will need to get through the winter, rather than rob them down and then try to build stores back up with sugar water. There is just no comparison nutritionally between the honey the girls have stored from nectar and what is made from sugar water. Of course, if it looks like you don't have enough stores for them to make it to spring, then you probably should feed. No need to let them starve, unless you are of the school that if they didn't make enough to get themselves through the winter, they are probably genetically inferior and better to let them die.
I didn't feed any of my hives last fall. Left them each an 8 frame medium of honey and they did fine. I did feed a new split and a new nuc a bit this spring to build them up initially but didn't feed my big hives. Don't plan on feeding any this fall. Not having to feed sure saves a lot of time.