Die out? Oh come on. History determines what are classics. I can still enjoy Gone with the Wind or the freat Wizard of OZ, I can enjoy Citizen Kane or Kurosawa films... these were made long before I was even born. When the great movies from the early 70's like Godfather or The French Connection came out I was a mere toddler, yet these films are still classics. They impressed people at the time and they still do. If any trilogy will be remembered in 30 years from now from the last 10 years, it will be LOTR I am sure, not the PT. Just because it lacks certain crucial elements: good solid storytelling, good acting and an impact of some kind. The PT just doesn't have enough in most departments to serve as a classic.
I remember loving the tv series The Incredible Hulk with Bill Bixby. They were the greatest thing I ever saw on tv. I saw it again some years ago and it was terrible.
And another thing, if we have to wait for a historical evaluation, what's the point of this forum then.