I desperately want to change the location of the timestretch feature location from advanced, which most people have never gone to, instead to where it really belongs, and what it's related to:
playback speed.
When someone goes to playback speed they should be presented with a simple checkbox under the slider to keep enabled, or choose to disable the pitch-re-processing timestretch effect. It should not be hidden away in advanced.
It would expose the timestretch effect to hundreds of MILLIONS of VLC users and everyone benefits and learns something new.