@Curt: Thanks, yes. I think I understand what you say there, but the control over the ongoing availability of the defined extensions is arguably the crux of the matter.
I mean, for example, what if the extension you want (as listed by Share Extension or Extension List Dumper) is no longer available in the store? - like BadAdJohnny, for example.
I would surmise in that case that BAJ was probably excommunicated ostensibly (at least) for its links with a VPN, but that doesn't alter the fact that it was/is a pretty devastatingly good adblocker, and it doesn't consume gigabytes of RAM either - so it's pretty efficient. Yet it is no longer available in the store, even though it works perfectly fine. However, only a minority who have the technical know-how to access and use a non-store copy of the BAJ installer are going to be able to take advantage of using it.
This would seem to be simply a form of effective censorship by a proprietary gate-keeper who disallows the continued availability of BAJ for the majority - via the "authorised" store - for unstated/specious reasons, and not because BAJ is "no good" either, but probably because it is apparently too good at what it does and could adversely affect incremental advertising revenues for the gatekeeper, or something.
Transparency so opaque you can't see a thing...

@visualoutliner: Nice features!    :Thmbsup:
I for one shall watch the development of Visual Outliner with interest.  Good luck!    :Thmbsup:

Meanwhile, just to give a quick nod to the importance of user requirements:

By the way, because PIM (Personal Information Management) is a very important matter for me in my personal and work life, I have defined and documented my requirements - e.g., in evaluating CHS (Clipboard Help and Spell) I applied the above method:

@mouser - by the way, there is still this: User Requirements for CHS

It could be used to save repetition by different/new CHS users. I put quite a bit of effort into that. Have not updated it in ages as no-one seemed interested. I think I left it as public and editable.

-IainB (November 16, 2015, 10:05 AM)

- which has apparently caused some readers to experience such traumatic mind-expansion and neural damage that it induces a temporary state of profound sleep from which the reader awakens with a complete loss of memory of ever having seen it in the first place. (This is the way Nature helps us to recover from traumatic experiences.)

-IainB (October 23, 2018, 07:57 PM)

Amnesia rules.