My rule with criticism is that if it doesn't work to improve the original, it's a waste of your time, my time, and the author's time. :p What groundbreaking in

My rule with criticism is that if it doesn't work to improve the original, it's a waste of your time, my time, and the author's time. :p What groundbreaking insights would you provide? It's somewhat obvious which points you'd remove; with what would you replace them?