Back in my early days as a Video Factory user, i didn't have enough screen resolution for all 6 tracks (yes, only 6 back then) to show on the timline at the same time. Since i rarely used more than 2 video and 2 audio tracks, it would have been nice to get rid of them so that i could have had the remaining 4 all visible and still had some blank timeline space visible under the tracks, since it's so incredibly handy being able to click on a blank section for positioning the cursor.
The first time i launched Vegas Video and had NO tracks i was lost. Took me a few moments to discover the "insert audio/video tracks" menu option. Later on i learned it was much easier to simply drag a clip to the timeline to create the tracks.