I would like consistent + and - signs to indicate Volume/brithtness up/down.
As mentioned before each icon should be understandable without looking at the keys around it.
In that way a +/- is much clearer than having different line-lenghts or a different number of lines next to the speaker.
Even after two years of almost daily use of my current laptop I still haven’t remembered the exact position of the brightness adjustments, so I do look for the correct Icon quite frequently.
Therefor it would probably make a (very small) difference to me.
Although I’m sure it’s not a dealbreaker for anyone.
About the “oops!’” key:
How about a combination of oops! And the icon?
That should make it intuitive for new V users but still keeps the originality.
The triangle v is also a very nice touch.
I also have a remark about the key layout shown in the picture:
It seems like there is only one Fn key. Therefor the right Fn-functions are hard or impossible to reach with one hand.
So to me it would be important that the frequently used functions like volume controls, brightness controls and disabling the touchpad can be reached with just one hand.
However I believe the Eve has volume buttons on the tablet part, so volume up/down may not be as important on the keyboard.
The mute button should definitely be further to the left though.