Cycle through 3 (or more) tools/brush with double tap Apple Pencil.

If you double tap, it will cycle through the last three tools (or more depending on setting choice)
So for example:
1. Start from from 'PEN' write something.
2. Double tap Apple pencil and it will go to 'HIGHLIGHTER', and highlight a word.
2. Double tap Apple pencil and it will go to 'SHAPE TOOL' and under line some text and draw a box.
3. Double tap Apple pencil and it's back to 'PEN' and write something.

This will prevent needing to move the pen up to the tool selection bar.
It will save so much time for people who write, highlight and often use an additional tool.

Thanks!