Ability to set "default playback speed" at more granular increment (not just 1x,1.5x, 2x) on iOS

On iOS in settings, the "default playback speed" can only be set in relatively large increments.

ie. 1x, 1.5x, 1.75x, 2x

It would be great if there was a custom field in that setting pane so that I could for example enter 1.25x or 1.6x and have that set as the default and not have to re-enter it manually every time (and the slider from the audio playing controls moves in 0.01x increments and is very fiddly).

Thank you.