We dropped the printed liner notes when they started costing more to print than the DVDs cost to replicate. We could price it out but it may be out of reach, and it will certainly be out-of-date relatively quickly.
IMHO, as an old-school old-fart, html/pdf is a far superior delivery format. It's easy to back up, you can print it if you really want, and you can put it on a tablet which you can read in the dark and change the font size (trust me, as you get older, you appreciate this!). Also, you get color printing for free.
The wiki software we are using has the nice feature that it's totally file-based, and you can make a HTML snapshot of it at any time. And archive.org will automatically make backup copies, just in case I get hit by a truck while carrying my laptop containing the wiki source, my house that has the backups catches fire, and the animeigo.com webhost explodes.
And of course, it's easy to put it on the Blu-Ray, and there will be a Data Archive image that you can burn onto DVDR.