Certain airlines, I believe, are starting to make museums of their past planes. Delta did some research about Mojave 880s for their museum. Unfortunately they waited too long. Now their past Convairs are paper clips and foil.
The Lucern air museum is probably a good one to visit. I personally would like to visit an airliner museum in a big hanger. I'd want to see the basic DCs, the Boeings from the B-17 derivitive to the 747, the Lockheeds, Convairs, Martins, Fairchilds, a Caravelle, Comet, Trident and those marvelous Russian craft. Plus all those I forgot.
Yes, this is a very good idea. But there is a fly in the ointment. Most of these planes will have to be flown at least one more time. This is dangerous and expensive.
I hope a leader in the world makes this happen.