I use "GoodNotes 5.4" with iPad Pro 2018, I am totally satisfied, however the geometric tools should be improved. Ideal would be to add predefined geometric figures, triangle, rectangle, square, circle. I have a lot of difficulty creating perfect squares, there are no way to manage the fill separately from the contour line. It is not possible to draw dashed lines. The option adding layers in drawings would also be nice. Are you planning to add these features in the future?
Best regards