It would be great to be able to set a gconf option to allow the left mouse button to drag scroll. I'm a tablet user and cannot use the middle mouse button (left and right only). Scrolling using the scrollbars is of course possible but this involves a lot of hand movemement when horizontal scrolling becomes necessary (and this is often the case because tablets usually have small screens and thus need high zoom levels)

I almost never select text from a PDF, and this could easily be added as a toolbar button which converts the mouse to a 'select tool'.

I'm sure this has come up before but the inclusion of such functionality would not produce confusion (as it is hidden) and would provide a very very solid PDF / DjVU reader for tablet / touchscreen users.