Interesting video, although there are a few things about a tee
pee and its engineering that weren't utilized that would make it more comfortable.
I lived in a tee pee for 4 years, and here are some tricks;
1; the interior liner isn't high
enough, it
should be head height when standing to keep the warmth in and let the fresh air circulate between the outer shell and the liner without you feeling a breeze of cold air. This will also evacuate smoke up wards when using a standard fire in the center of the tee pee.
2; a good layer of fluffed
straw all around the outside of the tee pee keeps the snow and cold from blowing in under the edge of the tee pee, keeping things dry while still providing fresh air, it also helps to keep critters out. The straw will greatly slow the tie-downs from rotting due to moisture.
3; a double layered entry, one on the outside of the tee pee (preferably waterproof) that keeps the snow/rain outside, and the other layer on inside of the entrance. This also helps to keep the living space cleaner.
4; Many traditional dwelling floors are covered with a good layer (6") of cedar bows turned sticky side down, again it creates an air pocket for warmth, you could lay carpet or the like over that as not to trip up. The cedar bows are a great air freshener.
These four "tricks" will make the tee pee very comfortable, and your RMH won't need as much wood.
Cheers! K