That sounds very exciting, @taonmatt !
Once automation of Hook itself is in place, there will be lots of ways for developers to extend its reach.
There have been requests for graphical views on the networks that Hook constructs. The Hook 1.3 popup window provides a list-based view that is like Finder Column view but one level deep at a time. We plan to build on that to show more than one degree in the window (without needing to
focus on a link (which you can do now with right arrow key)). That will address some requests made here.
What Hook provides is quite general (linking), so there’s no end to the list/type of applications that could make use of its data.
We have enhancements planned for 2020 that will open up yet more possibilities. But first we have to deliver on previous indications we’ve given here on the forum. Once multi-mac sync is out we can say a bit more.