William Jon McCann pushed a while ago some nice patches in G-Files that allow us to drag and drop files to any folder in sidebar.
That commit closes bug #692097 and improves further the DnD and expected behavior in GNOME. Although there is more road ahead.
Allow drag and drop to any folder
Currently we allow the user to switch tabs when dragging a file but we shouldreally allow the user to drop into any location directly from a drag.
William belongs in GNOME Design Team, but he has said that a designer has also be a programmer and a programmer has also be a designer. So, he reported the bug, he wrote the patches and he also pushed them on Nautilus Git.
The Ease Down | Face The Day
GNOME Shell Screen Recorder is bugged in 3.6 (fixed in 3.8) and playback goes a bit faster, but I guess is quite obvious what these changes are about. +1 to G-Files for it!