I come from a software development and testing background; on critical systems. Whilst I agree about the dev time, implementation, change management factors, without suggestions from end users as to a 'wish list' of what features they would like or improvements for future releases then you're not driving forward. The notification indicator was present on previous Sam devices and was a useful feature. Given that the current firmware offers camera flash notification as well as the camera / mic active notification at the top right, then all we asked for is for the consideration of developers exploring / expanding current functionality to possibly implement a visual notification.
Yes Beta releases are about finding current bugs and glitches, but they also allow for dev testing of new ideas and initial building of code blocks into the firmware release for future functionality.