I must respectively disagree as I've found that the people, and their "human capital," are an organization's most valuable asset. Even with the finest knowledge stores (e.g. wikis, documents) in the universe, you'll take a significant, more probably fatal hit to the organization. As an example, part of any real DR plan includes ways of protecting your workers in the face of epidemics and similar threats.
With that out of the way, great list! Definitely something to drag out at least once a quarter to make sure you aren't going to sandbag either yourself or, especially, your successors. Everywhere I've worked my eventual rotation to another site, promotion, or the temporary nature of the gig was front and center. I tried to make sure that was a feature not something to drag my or my co-workers feet over. And I've certainly lived the media/file format wars! My first disk drive was a removable 30 MB platter on the University's IBM 30/30 MB Fixed/Removable "Winchester" disk pack. Front loading 25,000+ punch cards once is surely a goal to strive for!
I know that today, given a 12 TB array with two copies on that, one more local copy on 2+ hard drives, and 6 TB removable hard drives off-site, is not anywhere near an "ideal" solution. I really need tape for the secure storage site's copy, but damn it have you priced tape drives? Cheaper to buy more hard drives and store them in something resilient (that storage facility is climate controlled already). Also far easier to do the format conversions then recycle the drives through. Even the 100 pristine Blu-Ray Disc's I've got aren't up to the job. My experience with CD/DVD-ROM's demonstrated that, that with recovery records too.
Ignore my carping... <mutter>...<mutter>. Need ----> Lotsa ---->