For me, it would be so important to just write down my extra-thoughts next to the actual page. It could be designed as „post it“ that os not on top of the page it self, but next to it, or just blanc space next to the actual page.
I mean, theoretically there is unlimited space in Goodnotes, but I can‘t use it properly to write my thoughts right next to the related notes.
In my opinion, it would be a pretty basic and uncomplicated feature that would make such a huge difference for me!