Then I hit some key or keys and begin to type what app I want to start, like brow... Or term... Then I pick one with the arrow keys and hit enter.
I start a browser
Anyway, Cinammon and all other menu/toolbar/dock DEs leverage something the brain/hand is good at: remembering relative location and visual cues and pointing at or reaching for them in an instant. Millions of years of evolution. Gnome 3 throws that away (at least without severe tweaking).