Use of Keychain passwords on Mac

I would like to submit a feature request. 

On a Mac, Safari stores all the login passwords and usernames in something called the Keychain.  It is a framework that the OS offers apps to accesss login credentials from a common source.

It would be ideal if Firefox could access the keychain and use all of the passwords that Safari has access to.

I want to know what you Mac users think of this suggestion.