1. Rotate selection
Selection tool works for resizing selected drawing - so why can't we rotate the selection? This is an integral feature of any select tool. It makes no sense as to why this otherwise powerful app lacks this basic feature.
2. (Infinite) Horizontal scrolling.
When reading a PDF, there are 2 page view options: vertical & horizontal. Vertical allows you to scroll between pages 1 & 2, while still having both on screen at the same time. Horizontal forces you to turn the page from 1 to 2, with no way to have them both onscreen, like as vertical allows. The lack of this ability impacts many books that have artwork or text that spans 2 pages.