Hi Aerovin,
If I may (politely

) differ in some points from your views? The later history of the Swoose is no less its history than it's original configuration - less important, but not less its history. Responsible museums can't just 'undo' those changes.
Mike's point about 'representative' reconfigurations is a good one but a different point. I would direct people thinking about this issue to the SS Great Britain (
http://www.ss-great-britain.com/) as to the issue of the difficulties of later mods and history.
I broadly agree with you over the Serian and the Hurricane, fair point. In 'history' terms you are quite right. But, on the other hand, the Serian is technologically much more important than the relatively common and
technically conservitave Hurricane. Nice to have it, but it's not an important airframe itself - it's a historical marker.
As regards the concept of a 'National' museum having 'foreign' aircraft. To elabourate on my previous point - as you say it's your opinion (which I respect) but on the basis of the brief for the collection (the Museum's policy) you'll find you are simply wrong. No, I haven't checked, but I'd bet a dollar to a plug nickel (funny money, this?!) that their brief is to collect
representative and important types and examples of aviation history and aviation technology - without any element of exclusivity to US types, though there may be a bias or preference for them. In other words, it's an international collection, weither you or I like the fact. For what it's worth, offhand, I can't think of
any public owned aviation museum of front rank worldwide with an exclusively national collection... I do accept your concerns over their bias towards obscure types - but I'm afraid obscure types are my preference.
A digression, and the question of what happens with two B-17s remains.
Cheers!