support tags in all applications and have combined search for them (e.g. let me tag e-mails and files, and when I search for my tag the tagged emails and files show up) (AFAIK GNOME developers already said, this will never come, because it would confuse GNOME users. Apple and Apple users have this feature for years now.)
Bring back F3 dual pane views in the file manager, having two windows side by side is not equivalent
Integrate and polish dash to dock or dash to panel, I don’t care which one just make it work perfectly OOTB.
GNOME: