It would be great to be able to press and hold the middle mouse button for a second to activate the "force-click" feature on macOS. This is useful especially in web browsing because it activates all these useful macOS features: https://support.apple.com/en-us/102309

Also, it would be very useful if a double-click of the middle mouse button activated the "smart zoom" feature, which is a trackpad gesture in macOS (double-tap with two fingers to zoom in and back out of a webpage or PDF)