Zoom Feature Needs Improvement
Instead of or in addition to the zoom bar at the top, which I find awkward to use, it would be much better to be able to zoom in and out to areas in the multitrack view just like you do in Photoshop and other apps using Command +, Command -, Command Spacebar, Command 0. There is also an issue when you try and zoom in as a track is playing and the zoom box suddenly shrinks uncontrollably and speeds across the track and gets too small to expand it.
Matt Stegner commented
There are default commands to zoom in and out in Audition editor and the multitrack. "-" and "=" zoom in and on horizontally on the Playhead, and "option and -" and "option and =' zoom vertically in the editor and the multitrack.
All of these commands can be customized via the Keyboard Shortcuts dialog.