We have been using the "live" feature for a few of our corporate town hall broadcasts. When we do this, we often start the live stream 5 or 10 minutes before the actual meeting starts. After the meeting, there is obviously 10 minutes of unnecessary video at the start of a playback.
A simple video editing tool (within Stream) that would all trimming, or adding music, (similar to YouTube or Brightcove) would be a big win. Instead, I now download the video, trim it in a 3rd-party app, then re-upload it.