Remakes are rarely a good idea.
The notion that the original attracted an audience, therefore a new version will attract the same audience and / or a new one is a serioulsy shakey premise, and as has been pointed out, it is hardly ever successful.
Nicholas Cage's Wicker Man is famous for one of the most stupid lines of dialogue ever, made all the more hilarious for the OTT manner in which he delivered it - "Step away from the bicycle!!!!!!!"
If anyone has subjcted themselves to the remake of Get Carter with Sylvester Stalone, they will have observed that the entire thrust of the film - a local hard man returning from London - and the appropriate cultural clashes, are competely absent, as is the laconic cold murderous personality Michael Cane delievered so perfectly.
As for The Avengers - the 'Steed and Mrs Peel' Avengers that is, the less said the better, and similarly The Stepford Wives.
With the possible exception of Planet Of The Apes, I am unable to think of a single re-make that has been worth the price of a ticket, or the time to view it on television.