Adding on to what Hogan said, the cream rises to the top. Anyone remember the Jessica Lange film of Streetcar? The BBC film of Suddenly, Last Summer? Luckily, Vivian Leigh and Elizabeth Taylor's brilliant performances in the original version of each respective film are readily available, and often re-broadcast on cable. And each film only shines better when compared with any successor. Although it is surely blasphemous to say now, I'm sure Natalie Wood's Maria will be in my head when seeing the new West Side Story! (And how will they make the dancing more "realistic"? )
To play devil's advocate, I understand being so uninterested that you are annoyed that news on the new films will eat up precious oxygen - particularly on these boards. Personally, I haven't been totally impressed with a major motion picture film since Chicago. Even the better attempts (Into the Woods) leave much to be desired. The film aesthetic of the 50s - 70s really were the most beneficial to musical & play adaptation.
"Sticks and stones, sister. Here, have a Valium." - Patti LuPone, a Memoir