Proposal for tidying up Settings App

Not for me.
a) BTN3 is a reset and only largely used as many Apps dont provide a proper way to return to the >launcher. Thats my interpretation.

Fair enough!

b) a long press also means longer navigation to get out of the App. Instead of selecting Back using >BTN1 all the way out of a deep sub menu and finally exit you would now have to go BT1, BT1, BT1, >long press BT3, which is just as awkward as having to navigate to the last back menu item on the >current settings app.

In this case, instead of navigating all those buttons I already simply do a long press BT3. But your point on menu consistency stands.