A Roof Top AC - Yes or No
I think it depends on where you live & how you 'Stream'. I can appreciate the purists who feel a roof top AC ruins the classic lines of a vintage trailer. I also note most of these loyal vintage folks live "up north", or at least where temps & humidity are not a constant concern for most of the year.
Me? I live in central Texas. I don't think I have much option & have a 15K BTU roof unit on my 1954
Cruiser. The AC will make using the Cruiser a fun adventure and not a chore to overcome our weather.
Fun trumps a chore every time. Life's good!