So I sort of came up with a solution using the fof/links extension, and creating an internal link like:
/?q=is%3Aunread
the problem is that when you do this, the search is sticky, and so when you click on "All Discussions", it still only shows the unread ones.
This appears to be an issue with the search field in general -- maybe it's a feature?, but it feels like a bug -- I'm hoping there is a way to change it so that the search field goes away after clicking on anything else.
Should I start a new discussions asking that perhaps? I'm pretty new to forums / flarum in particular.
Cheers,
Kem