Make it easier to reorder and group pages.
Not that I want inDesign to be Keynote, but they're kicking butt in the page re-ordering department. I make presentations a lot in inDesign, and re-ordering, nesting and duplicating pages is a huge pain.
In Keynote you can move them around, group them, duplicate sections, nest them and a few other things, with no problem. inDesign's pages window is due for a reboot.