There is a lot of place on the left side of mixer, so show/hide button for these two elements wouldn't be problem in my opinion. Here is why:
- when you have few cues, it take a lot of space in your mixer.
- Show I/O now works the stupid way, it's "on" but when you resize is dissapear - it's veeery anoying
- I know this is matter of look but come on meters and faders in V4 are terrible in comparison to V3 when there very super readable and tidy, now mixer is clumsy.