Star Wars

That's exactly how canon is done badly. Why in the end it never helps anything.

They try to stay consistent across dozens of series, each with several writers. Eventually it becomes more of a hindrance than help, as all canon does; And they restart to clean up the mess.

But if they didn't bother trying to keep a consistent canon to begin with. Instead, letting each writer tell their own story. They never have to wory about it. Each one can be self contained, and make changes as needed to tell the best version of their story.