"Load as Stack" feature for multiple Audio tracks
LOAD AS STACK
For multiple tracks in your audio bin that you want to ad to a sequence, one would select desired tracks and right click to find a "load to stack" or similar type named function. What this would do is load every track stacked into sequence tracks instead of end to end on a single track.
When working with long tracks for say a musical concert it wastes alot of time dragging each track to its own track in the sequence.
There would be options within the preferences to customize weather you wanted the tracks to align to in or out, time code, or play-head among any other appropriate parameters.

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Christina Crawley commented
You can now select multiple clips in bin, right click "Merge Clips" and sync by in point, that creates a "new" clip that can be dragged into timeline as stack. You can then just unlink the timeline clip later if you need to remove individual tracks later.
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Joseph Bastien commented
Great idea to just have this built in, but if you wanted to do this now, you could always make a multicam and bring in the unnested version of it.
For example, if you have 5 audio stems...create a multicam by selecting the stems and use a Black Video or Transparent Video as your video file. Then create multicam sequence. In this case, the settings don't matter because you're not using the mutlicam except to stack layers. Just don't have it sync by Audio or then it may give you issues. Then, open the multicam in your Source monitor and drag just the audio into your timeline. Make sure the "Insert/Overwrite as Nests" button is turned off. Then just delete your multicam sequence. Boom!
Hope that helps