Medium option for button bar icon size

Feature description:

A smaller size than large but bigger than default. A Medium icon size

Problem solved:

I’ve been playing around with the sizes & margins of items on my now playing screen & a slightly smaller play pause button in my case would allow for a slightly larger display of my album art which is always nice.

Brought benefits:

Added customizability to users

Other application solutions:

Additional description and context:

I can gain soace by making other text smaller but im curious as to why there isnt a medium option for icon sizing anyways. Id rather not make text smaller if I have the choice.

Screenshots / Mockup: