Buster Keaton short on TCM. In it they talked about the many Keaton comedy routines he invented or expanded from his Vaudeville beginnings.
He contracted with MGM and they stunted his comedy. Later MGM transferred many of those unique Keaton routines to Red Skelton, The Marxs Brothers, and Albert and Costello. All these people had fabulous careers. None were Keaton yet they stole his stuff and it worked for them.
So while we will never have him back we could very well have some copies that are very good