I've been directed here by the helpful Accordance HQ, as I emailed the Logos Prepositional Outline as a feature request too.
I've skimmed the thread about Outlines of Lexicons but the above new feature in Logos 6 is really great!
I really do think this would be a very helpful Accordance feature for your average pastor, with rusty languages (sorry) and wanting helpful technical exegesis for weekly sermon prep.
Might it be on its way? I'm still on v10, but something like this would really justify an upgrade.
Love the app, but the above would really make it shine and surely it's an advantage of using software at all: one click for really useful technical info like a Prepositional Outline.