Okay, controversial suggestion time.
I've recently read a book analysing Batman as a cultural Icon, and one of the points it makes is that any reading of the characters becomes valid, even if it isn't 'canon'.
For example, Batman absolutely was a jingoistic patriot who sold war bonds. Also, he absolutely was the Dark Knight of the eighties. Also he absolutely was the pioneer of camp in the sixties. In order to fully appreciate the cultural value of the character, all these readings are valid, and as such, should be embraced by the fans - after all, whether liked or not, they are part of the past and cultural value of the character.
So, since any reading of the characters can be seen to be valid, while not 'canon', why not throw in one that was, in the fifties, seen by a large audience as absolutely there, and seen by a lot of young teenagers as a very special one, which helped them make life decisions:
Batman and Robin.