So, not a Dock.
People don't want their whole desktop to fly everywhere and zoom out when they just want to quickly switch or launch an application with the mouse. They just want to mouse over the bottom of their screen and click.
Same for launching an application via keyboard / doing a calculation / finding an emoji. People just want something akin to Spotlight (think uLauncher on Linux). Something lightweight that pops over and allows them to quickly do the thing, without a lot of visual clutter happening and then happening again in reverse.