The reason I locked the previous ticket was: impatient entitled users getting very aggressive towards Nautilus developers there, while the devs didn't have a clear path forward (stuck with a limitation from libadwaita's AdwDialog, and no designed solution available as an alternative UI for Nautilus).
Thanks for your understanding & willingness to start a kinder dialogue on the forums… material for a GNOME Design "Whiteboard" ticket maybe; I hope that team will consider it.