Vertical layout of report page tabs during editing (web and Desktop) with auto-scroll when dragging/re-ordering

Vertical layout of the report page tabs in web (reading view) is great! So why does it revert back to horizontal layout during editing? Horizontal makes it difficult to navigate when there are many pages, and re-ordering of pages is even worse due to lack of auto-scrolling when dragging to re-order pages. Please make vertical layout an option during editing in web and Desktop, and add auto-scrolling when dragging a page to the beginning/end of the visible range of page tabs.