Steffen,
I/o status meaning system status from the home screen.
With regards to the current scene recalled, you saying that ‘it doesn’t Matter once you’ve changed any value as the scene data is no longer valid’ is missing the point a bit.
I think it is a comfort thing, knowing that one has recalled the correct scene and making changes to the correct scene, a feature which is available on other consoles, Venue and Midas come to mind.
I’ll add another request. Flashing sends on fader similar to the VS for virtual soundcheck