I think a lot of these comments are not necessarily valid or have been addressed already and we've lost the actual productive feedback in the mess.
- Integration testing - This exists and is very commonly used: https://docs.flutter.dev/cookbook/testing/integration/introd...
- Location - This 100% should be a core offering, its crazy that its not for mobile application.
- iOS dark mode - Flutter supports Dark Mode - https://api.flutter.dev/flutter/material/ThemeMode.html
- iOS keyboard dismiss decoration - Not sure on this.
- iOS keyboard scroll-to-dismiss mode - This is trivial to setup, just listen on scroll and hide keyboard. You could even create a generic handler that can be reused everywhere for this.
- iOS NavigationLink widget - Not familiar with this construct but easy to build yourself.
- iOS checkbox widget - Totally agree but also easy to build directly.
- Android camera that doesn't randomly crash (unfixed for 3 years) - We've got a couple application that use camera and never had this issue.
- Android date-time picker - This has been in for a long time: https://api.flutter.dev/flutter/material/showDatePicker.html
- Usable documentation for Navigator 2.0 - I think the updated docs on navigation have addressed this issue largely.
- Debugger visibility into Dart async tasks - You can 100% debug async tasks.
- Stop HTTP requests on timeout - This exists in Flutter https://stackoverflow.com/a/51489701
- Testing on physical devices for apps that use flavors - We do this regularly across 5 different flavors on both iOS and Android.
- UI inspection tools that don't randomly stop working - Never had this happen.