ugh it honestly worries me heaps about that issue of the movies being too large. I hope they don't resort on cutting content because I hate it when we get a 'what could have been' project. I mean I'm happy that DLC prevents us from having that issue but I'd rather not have another FFXV game where the main game was basically unfinished and then a whole pile of DLC got released as like a way of trying to finish it. I'd rather have two discs or even another delay lol. ;_;
If worst comes to worst and the disk is full, I would hope they just keep what's on the disk and have a mandatory patch to put the rest of the content on the game. It's not ideal but then at least you could have everything. Two disks can also work. Anything but cutting content.