I recently switched to the MX 3 from the G600 and do find myself missing the "shift" function that provided a complete set of alternate mappings for any button to nearly function.

I would love to find more ways to utilize the side scroll wheel based on context like moving the text cursor or precision selection, or speed sensitive actions like a nudge taking you back a page while a fast spin takes you back to home page/ top level. Also, navigation of sideways sliders such as within Logi's own Options app to change pointer speed- how are neither scroll wheels valid when trying to adjust??

I wish that when customizing the left side gesture button you could mix-and-match from the included pre-sets to a custom layout ("snap" is only available under the window management layout).

Lastly - why is my most expensive mouse the one with the loudest, most "plasticky" click?? Hopefully use will quiet it down but I have already found quieter switches, lol.