I'm not sure if the developers have experience with any Adobe applications such
as Photoshop and Illustrator (although I think it's a safe guess to say yes!),
but there is a feature in thos applications that allow a user to interactively
pan around a document by holding the spacebar and clicking and dragging on the
document.  Obviously a spacebar binding wouldn't work with text editing, but
perhaps a key combo like ctrl+alt could be depressed and provide a "hand" style
icon that allows a user to grab the document and pan around... 

  I hope this could be implemented, it would make graphically minded folks quite
happy!

Thanks,
Sean