There's a simple solution for people who feel another Glass Menagerie is unnecessary: don't go.
London theatergoers do not complain when Hamlet, Twelfth Night or Midsummer Night's Dream get revived almost annually. That is part of their great legacy of theatre. The US tradition doesn't extend as long, of course, but the great plays of Tennessee Williams, Arthur Miller and Eugene O'Neill, among others, are our own legacy, Their plays get revived with frequency because a star wants to do them, or a director has an exciting vision, or the ingredients just come together at a certain time due to schedules.
A great play with great performances in a great production is always welcome, as far as I'm concerned.
Begin at the beginning and go on till you come to the end: then stop.