Welcome, and thank you for writing that, it feels good to read.

Extensions are to make life easier for FF users. So I am trying to get something which is fitting most of you as much as possible, while sticking to the initial goals of showing the path to bookmarks and of trying to remain as close to the native sidebar as possible, since an add-on cannot be in the native sidebar anymore after Quantum.

Hoping one day FF will integrate that much needed function, and so success for that add-on will be to disappear :-) In the interim, it may be here for long however :-D

Cheers, aaFn.