Arnaud suggests a 'What's New' popup notification system when opening Heidi Labs presenting the changes succinctly with two buttons: 'Dismiss and Remind' to reopen later and 'Dismiss' to not reopen. It also offers a Heidi Labs button with features activated, allowing you to selectively deactivate features without leaving Heidi Labs. When disabling a feature, a popup would ask why ('do you want to tell us why you don't like the feature? ') with an answer option or not. This would allow for committed and motivated beta testers with targeted feedback on changes.