more options for pens
A greater variety of colors for pens and different typs of pens and opacity would be very nice.
We can't have a pencil? A pencil that we can change colors on like for redlining a drawing? You took away Windows ink and left us with this giant garbage maker stuff?
Aaron Robson commented
having same/similar options as you do in OneNote would be great.
or at the least let us use a colour wheel to choose more vibrant colours.
the default don't stand out enough.
Steve Fitch commented
More than 1 highlighter.
thicker lines, arrows etc would be great