The biggest advantage to a packable hot-tent (tipi/stove, etc) to me was the level of stupidity I was willing to exhibit during the day with the knowledge that I'm going to be able to get warm and dry back at camp. Coming from a backpacker background, staying dry, avoiding the really nasty stuff certainly means you won't need a hot tent - but conversely it means you won't be willing to crawl on your belly through snow drifts up a nasty ravine to try and get a shot on that big bull. It was a huge mental shift for me, because when it's 4 degree's out, blowing snow, if you know you can come back to camp and get warm if necessary, you suit up and go. If you're worried about getting wet, you're not going to go after than next ridge, ford that next stream, etc. Maybe I'm just a wuss, but I've done hyothermia, I've done wet soggy snowy crawls, and knowing you can get warm and dry is artificial courage for me.