REI Hoodoo 3: http://www.rei.com/product/761889

It is a 3-season tent, I think. I use it for privacy only during good weather and just use a bivy sack if I am away from folks. In winter it is primarily rain and wind protection.

I was thinking about hanging a space blanket liner inside but am pretty sure condensation would make that a bad plan. So then I began thinking about hanging a wool blanket inside, but that is pretty heavy.

I have good sleeping pads, sleeping bag(s), and clothing so I survive just fine. But as I am looking at camping out again this winter, I was just wondering if someone had invented a better mousetrap.

Edit: I also have acquired a 12 x 12 silnylon tarp [with 4 adjustable height poles to make a summer sun shelter] that I might just lash down over the tent.