Reminds me of the GD Rom for the Dreamcast. Sega got a regular CD to be able to go to 1 gigabyte by removing the extra crap and safeguards that were there since the format was created. I remember working with Photo CD workstations and having to jump through hoops when burning discs with all the high sierra and other buried stuff that is part of the deep level of CD formatting. DVD has the same crap, and could easily hold more if you formatted it with a proprietary setup.
The down side though, as was proven with the GD-ROM, is that you have to be extra careful all through the manufacturing and distribution. Even the end user has to take care, since the disc is now much more prone to have read errors with the extra buffers removed.