Jack, as you have noted before... You write your books for the Hobby and the Hobbyist... They are not directed towards a specific segment of the Hobby, but instead for the Hobby as a whole...
As such, I would like to see a small change, if a 3rd Edition comes to fruition.
My time in the Hobby, is rapidly coming to a conclusion. As the death of Wendell, reminded me...
New blood, is driving the Hobby more and more. As such, because of a rise in prices on the "older more desirable" pumps... More and more of the new Hobbyists are looking at the pumps built in the mid 60s to later 70s... I personally would like to see a small section of a "New" Edition, dedicated to these "New Hobbyists"... Those that are buying the "newer" model of pump, partly because they are more affordable and partly because they were/are the ones they remember from their younger years...
I don't yet have all of the "Life Experiences" that you and some of the other "Crotchety Old Farts" that reside on Oldgas have...(but I'm gaining rapidly... LOL)
But, I know when I started in the Hobby I gravitated to the pumps I remembered; first... And then the "beauty and wonder" of the "older pumps" became apparent... I believe that is still true....
As to a Personal wish list... The longer one is in the Hobby and the more specific their Collecting becomes.... The longer their "wish list" becomes... Or atleast, that is the way it is for me!
Whatever you want to add to a 3rd Edition, I do believe will be fine with most in the Hobby! I know it will be for me!!