A practical disadvantage of the random padding is that scene rips don't include it, so unlike Wii/GC/Xbox360, it's impossible to convert Xbox1 dumps to Redump format without needing several gb's worth of 'patches' just for the random pattern, which isn't really game data. But I guess a similar situation occured with Dreamcast rips <> raw dumps.
The intention of this project has never been to match scene images but to provide a superior alternative to them. IMO it should not be a criterion whether or not our dumps resemble scene images. I've always thought this project's focus lies on preserving games, not collecting.
Edit:
But AFAIK this is the only system that we have were maybe 75% of the dump data would consist of just random byte patterns that don't have any real use.
Wii, anyone?