My biggest complaint with GTK apps is the GTK file
picker. Does not compare with KDialog. What do we need to do
to integrate KDialog with GTK apps? Is that possible at our
end? Something like what Tim did with LibreOffice.
kgtk-qt3 is an ugly hack that I won't use. :)
Did you try gtk-qt-engine? It's a separate "hack" that
targets the theme GTK theme rather than the dialogs, and it
adds a module to Control Center to adjust it.
Yes, yes, yes. For years. That package has nothing to do with the awful GTK file pickers.
:)