Although I feel excited about some features like, the pasting tables from excel, I'm sure that other math students, and engineering students like myself would enjoy and take advantage of some of this features in order of importance:
1) having the infinite canvass feature as optional, I mean to have a set sizes of pages so it becomes easier for people to export pages to pdf for a defined size as letter or A4, and end up with better organized notes. ( I ve seen this feature being asked in blogs, YouTube comments, reddit comments, even in Microsoft comments itself)
2) dotted lines, and dotted preset drawings like circles, squares, and being able to color those like in paint.(I also have seen this in reddit, YouTube, Microsoft forums and others)
Those two features alone have kept me from using OneNote instead of pdf annotator, despite the fact that one note is the best note taking app ever, and way superior to pdf annotator in all other purposes but math. And that is why. Like me other people have been waiting anxiously to see those improvements in apps, so I wanted to let you know.
Thanks for reading, have a good day!