In my workflow recording music (and I suspect for others as well), I record sessions and livestreams as one continuous recording to allow for getting into the flow without constant starting and stopping the recording. It could be a few takes or even dozens but the result of this is almost always that the better takes are toward the end of the resulting clip, not the beginning
When I pull the file into Premiere, it has to generate the waveform, but I have to wait for all of the earlier takes in the clips to be processed to see the waveform for what I'm interested in--If I have a 2-3 hour session, this can easily take 5-10 minutes. I would love to have the option to let the waveform get rendered from end to beginning so I can more quickly view to the most recent part of the recording.