Hi Valentin, thanks for your feedback! We're a bit worried that more options in the speed controls will clutter the interface, but we'll think about it. Out of curiosity, what's your main use case for such fine control? Most NLEs offer 2x 4x etc. playback rates.
We're planning on improving the playback controls via the JKL keys at some point to have an easier, more fluid option to adjust the speed, i.e. pressing the L key multiple times to increase speed, K to stop etc.
It would be great to have a variable slider for speed adjustments or at least add more options in addition to the existing ones 75% 125% 150% 175%.....