Hello Duncand,
Whilst I certainly do not agree with your 'so what' comments, I can certainly understand where you are coming from with regards to the other aircraft and crews.
The simple fact in all of this, is that with the exception of the Canberra, XH558 is the only one of your list that can realistically be returned to flying status. As nice as it would be to return all of the other Cold War aircraft to the skies, unfortunately it is not possible.
Hopefully therefore, XH558 can stand as a testament to all of us who "grew up in the shadow of a mushroom cloud" and go some way towards showing a younger generation, the very real dangers faced every day of that period.
Flipflopman