As the author of the original Big 81, I do not wish to back down from even one of them. The list was a blueprint for AC. There are likely reasons why some can't be implemented such as code issues.
Maybe there could be a newer list, but someone else will have to do them. I spent hours, HOURS, on this project doing it over and over. At one ACUC planning session, JB stated, "Just glancing at this, we could do half of them easily."
I would look at it more like, "Here is v6.5 everyone. And, here is the list of improvements and changes, some of which we came up with and some of which came from the list of 81. Then, as always, list your updates, of which, hopefully, 30 to 50 would be from the list. As stated, it has been two years. All the more reason to do them than to pare them down.
I hope I am not offending anyone, but reducing my work to ten would cause me to think about jumping ship.