There is however a combination of extensions for Gnome Shell that allows you to configure your good 'ol 3x3 or 6x2 set of workspaces! Here are the links:
When both are installed, rigt click anywhere on the workspace indicator on the bottom right side of the screen and select how many workspaces (vertical and horizontal) you want.
You may also want to hide the bottom panel. By default this is not an option.
However, there are basically two fixes available.
1. With CSS (the most clean way)Open, and edit
~/.local/share/gnome-shell/extensions/Bottom_Panel@rmy.pobox.com/stylesheet.csson line 6, change the height to
All credit goes to Brian McSweeney
All credit goes to Rasmus.
PSIn both cases, remember to update GNOME Shell (Alt + F2) and execute