Although I am not a huge fan of winter, I have done a number of snowshoe hiking trips in winter. Last winter my husband and I did a four mile loop snowshoeing in the BWCA of northeastern Minnesota to see some Native American pictographs. We got a very early start (hit the trail by 6am) and off the trail by noon and it's a good thing because the cold REALLY hit by that afternoon and I mean -20 F actual temp. The scenery was absolutely incredible though. The year before that we did a five mile snowshoe trip in the Superior National Forest on some rugged terrain breaking fresh snow the whole way, and we had a lot of snow.
I do everything you mention in your blog post, including the hand and foot warmers, lettting others know where we are going, warm gear, extra camp stove (fits in the palm of our hands), flashlight etc. Our dog gets to wear canvas slippers to keep the clumps of snow out of her paws and we bring extra water and food for her too. We also bring a compass and if there is a map available we bring that too and our GPS unit. It is easy to get lost in the SNF and BWCA. We use an orienteering compass because they can be dropped in the water and still work and do not succumb to cold or dead batteries. It is all mechanical and knowledge based.
Yesterday we did some geocaching and bushwhacked through some thick woods about 30 miles north of the city where I live, in the Cloquet State Forest. No snowshoeing as we didn't think there would be enough snow but we could have brought them, though the bushwhack was a bit thick for snowshoes. I have some pics but haven't yet gotten around to uploading them. Will share them soon!
We had a middle of the day campfire too which was fun, and saw two grey jays who flew over to check out our campfire and see if we had any goodies to share, which we didn't lol.
I also use hemp socks or heavy cotton work socks, no wool!!! The boot makes all the difference, and foot warmers too!