How many of these still have substantial unrealised potential?
For example, thinking back through various organisational Wikis I've encountered over the years leaves me thinking that practical Hypermedia needs a little bit more work yet...
I think that Operating Systems could do a lot better in representing content as more than just a list of files in a folder, using metadata to package and present the content into something that behaves more like a object you can interact with in different ways, and is more user-friendly, dividable (take a smaller piece of the content on a flash drive for portability, or divide content into two pieces and don't lose the metadata associated with it), automatically versioned, and with a variety of presentation modes (instead of just icons, perhaps it could show 'box covers' or 'banners' or the first few words of the text as a generated picture, etc).
I make all sorts of different types of content, and keeping everything organized is just so difficult, especially if copies exist on different drives and computers. I can't effectively put gigs of video into Git either, as far as I know, so most of it you have to take care of manually (or maybe I should set up a Perforce server, but most end-users and less tech-savvy content creators aren't going to go through with that).
> instead of just icons, perhaps it could show 'box covers' or 'banners' or the first few words of the text as a generated picture, etc
Dolphin does that. The Windows explorer tries to do that as well, but in a much more limited fashion.
Dividing metadata (with the respective privacy issues) and versioning large files are incredibly hard problems. And not the kind of "hard" that a genius in academy writes a paper and it's solved, but the kind where no two people want things to behave the same way, and getting into an usable shared set of assumptions may be even impossible.
Not disagreeing with you, it is very difficult, and people would have difficulty coming to a consensus for sure. But I still think it could and should be attempted, at least with one of the operating systems out there.
Imagine if Notes could have been merged with Smalltalk environment and Hypercard environments. Have the Notes/workflow idea with the live Smalltalk environment, and the linking of hypercards (hyperNotes).
For example, thinking back through various organisational Wikis I've encountered over the years leaves me thinking that practical Hypermedia needs a little bit more work yet...