I'm a little puzzled as to why he's so set on having a physical disc as output. If this is for personal use, wouldn't it be easier to just rip the episodes to mp4 using Handbrake, which can also add subtitles? And once you've got eps as separate files, no need for menus.

I buy a fair few Blu-Rays, but I've never watched one directly. It's just a distribution format for me.