Vlad Turns out there's quite a few extensions (I haven't tested them yet): https://github.com/ArchiveBox/ArchiveBox/wiki/Web-Archiving-Community
This one in particular seems to be the better approach on what I was describing: https://github.com/karlicoss/promnesia
That said, it took more time than is reasonable to find that ArchiveBox wiki using Google.
If it weren't for the ArchiveBox wiki, I would have still thought those extensions didn't exist, cause I wouldn't know how to search for them.
From this, I think it'd be better to have a permission system for extensions, replicating what macOS does for software.
Alongside some way to expose these and other useful extensions to Orion users, while also describing the use-cases for each.