Here's my two cents:
Pan: Timeless IP and definately has a lot of nostalgia, even more in Disneyland where it's been around for 60 years. However, is very cheaply made by today's standards and some parts are just plain bad looking.
E.T.: A timeless, although slightly lesser so IP that also has notalgia, just not as much. Definately has higher production value then Pan, some of which holds up today great, some of which is just as bad as Pan.