This was so essential. It brought a great efficiency and sense of calm to see at a glance all the items and cells that had changed since your last visit to a board. I realized the other day, I hadn’t seen any green highlights in a while.
It’s funny - we hadn’t even missed it and I hadn’t thought of it for a long time until I came across this post. It would be nice to see it come back as a toggle you could turn on or off, like Conditional Coloring.