I am not sure this would work for me - one of the important challenges in writing is to keep each sentence readable and not too complex, while not making the wr

I am not sure this would work for me - one of the important challenges in writing is to keep each sentence readable and not too complex, while not making the writing boring by avoid any complexity whatsoever. So thin columns would make this harder, it's easier to scan a sentence if it's just on one or two lines. And I also think it's nice to see the piece as the reader sees it while you write it, more or less. But hey, to each their own.