It’s lighter, has fewer moving parts thanks to its built-in battery and continuous bottom shell, and has an optimized foot design — all helping Magic Mouse 2 track easier and move with less resistance ...
Many Mac users enjoy Logitech’s MX Master mouse because of its ergonomics and additional features, though you do lose out on some of the multi-touch gestures that the Magic Mouse offers.
As noted by Macrumours, a Korean Apple news aggregator known as yeux1222 has suggested that Apple has made a prototype of a revamped Magic Mouse that supports new hand gestures and voice controls.