The Logi Options+ app is great, I love being able to customize my mouse controls, and the UX is a definite step up from the previous version.
One feature I would love to see added is the ability to set controls for a group of apps – For example, I'm a software engineer so i often switch between browsers for testing – it would be great if I could create an app group for all of my browsers so I could set the same controls for all of them at the same time