The entire magic mouse concept is half baked since it relies too much on invisible touch areas for much of it's functionality. It's also way too thin for most people to use comfortably for extended periods of time. It's a really bad design overall but the bottom mounted charging port was the straw that broke the camels back.
Apple could release a "pro" mouse that mostly copies the functionality and form of the MX Master 3s, and it would likely be a home run.