My mother tells me the story she heard Tina relate some years ago, Frank had a full-time cook, one year he invites the man and his wife to vacation on Frank's yacht, (I don't recall specifically, I believe it was a week), while Frank and daughter Tina did everything for them on the boat, the cooking included. Tina said it was just her father's way of not simply saying thank you, but showing his appreciation for the years of service the cook had given him.
There will never, ever, be another singer, IMHO, who reaches one's soul as Sinatra did with his ability to interpret music.
No matter some, even Frank Jr., can imitate him closely, none will EVER match The Voice fully -- and yes, as you say, touch the soul as well as his person touching the heart.
I've come into a little appreciation lately of Frank Jr's talent, having heard him on Sirius Sinatra. In fact, I'm looking into getting a couple albums.
Today's male singers of standards just don't cut it for me (except, perhaps, Buble'). I like the baritone singers like Sinatra, Joe Williams, Gordon MacRae, et. al. The guys today sound like girly men.