Since we make sure all of our published articles are peer-reviewed, or at least reviewed by an editor, why couldn’t we have the same thing for our presentations? People could submit their script and slides (or even a video of them giving the presentation) for review before the conference. Editors with presentation experience would provide feedback and suggestions and presenters would modify their presentations as needed.
Would this take time? Sure. Resources? You bet. Worth it? I’m certain it would be. Is it likely to happen? I can dream, can’t I?