Thing is, if my choices were to make up a substantial part of any list, it would involve a lot of selections that would be obscure to many. But I suppose asking people to list their Top 10/20 lit and 10/20 SF/F might generate something, although I suspect it'd be an odd list in terms of critical/pop lists.

For example, I would list Borges on both hypothetical lists. Very few multi-volume fantasies would make it. Lit list would have fewer Anglo-American works and more Latin American ones. Likely wouldn't provide as much a common ground from which one could then explore the works they haven't yet read themselves.