WHAT DO YOU RECOMMEND
An secondary slider next to the volume slider, which can change the playback speed from 0.5x to 2.0x in 0.1x increments. This option should not change the pitch like how it is done in a few implementations.
REAL WORLD USE CASES
To learn the pronunciation of another language, I usually look for Podcasts with an transcript. The speed sometimes is to slow or to fast to keep up and constantly pausing is not the experience I am looking for