I use the Notepad all day, every day. Please consider the following:

Brighten the highlight colors. They are very pale and hard to see.

Brighten the font colors. I have a few favorites - like blue and purple because they stand out. The others should too.

Provide option to change the font size a few points (for headings or to make things stand out).

Allow me to "pin" a task to the Notepad. I use my Notepad for our daily Scrum meetings. It would help me get to a task quickly if someone has a question, I need to make an update, etc.