I think there should be a great Update for Office in the next GDR Update.
Something that makes Office on WP stand in par with the iPad version. I want a real office applications on WP and by that i mean : to be able to make a PowerPoint Presentation with Animations/Transitions , insert image in Word documents , insert tables , more fonts , more customizations.etc ...
If they could Make Office on WP with at least 50% of the functionnalities of the Desktop Office , that would be awesome !!
USB OTG could do fine also , for printing and plugging USB Flash Keys.
Office should be one of the key features of WP , I think it could be the real plus that distinguish WP from iOS & Android. If the people can have a professional Office Experience on their Smartphone , it will make WP much more appreciated ...