The Swiftpoint Z Mouse is amazing!
https://www.swiftpoint.com/store/swiftpoint-z-mouse/

I supported their kickstarter in 2016 and have since bought a second one for my laptop.
Whilst it's not a traditional MMO mouse, it does have a lot of buttons and amazing functionality - gyroscope, accelerometer, pressure sensitive buttons.

It is expensive but I've wasted more on mice that haven't lasted anywhere near as long.

It's also the most comfortable mouse I've ever had!

Their kickstarter campaign page gives a lot of examples of how to use the various mouse features... https://www.kickstarter.com/projects/granto/the-z

I'm not affiliated with Swiftpoint, I just love the Z