I love Goodnotes so much as a full time graduate student in chemistry. I can draw molecular structures, fill out pdf assignments with handwritten answers, and edit my work super easily.

I spend a lot of time uploading PDFs for homework assignments which allows me to write directly on them and export the pages into my grading platform. An idea that I have had (mostly for aesthetic purposes) is regarding the outline performance in a notebook; I add important pages to my outline, but its not necessarily a helpful tool until my notebook is over 50 pages or so. It would be cool to add a function that allows you to create a buffer between pages to signify the end of one 'chapter' and the beginning of another. If they were colorful unlike the pages actually being used, they would immediately let you know that you have escaped one topic and entered a new one. These 'buffer' pages could be much much shorter than the working pages and even include titles relevant to the users outline.

that's all!

PS as a macbook user, I would love to be able to pick what pages I would like to export rather than
a) exporting one at a time
or b) exporting all pages at once.