look at this in another way, to some, a snowflake is an incomprehensible disaster, to the next person, a 110 degree day just as incomprehensible. Rving life gives mobility to move with the seasons, there is not a perfect average anywhere, or a minimalist unit suitable for more than slight changes in temp. that maintains indoor comfort.
OP has that hardiness, life on the CDN prairies has all those weather extremes, sometimes from day to day. My bet is he will go larger, more featured than his minimalist concept.
Someone from our southern regions who have not experienced the extreme temp swings of the northern plains or the onset of very warm high humidity buggy times in the south. No awning, tent or quick enclosure can give comfort anywhere, The retreat indoors is into a cooled or heated place is the only option.
OP look into your comfort- discomfort level . While minimal of tow vehicle, amd living unit has appeal as an upfront and towing cost, the living Use cost is to more.