I understand that. But as @grb explained here, the filters need or make the most sense with the “All items” view. So if you change the “All items” view to something else, the question is, what does that mean for the (remaining) filters?
… what I just wrote above… - And does that mean, you would have the folders (and types) filters besides the “hierchical list of folders”? And what would the folders filter then “do” or be there for?
So if you e.g. chose a certain collection via the filter - how would the “hierarchical structure” change and display that?
(BTW, I don’t want to poke holes - I’m genuinely curious, because I would like to know if a solution like that could work - and how 
)