Hiya!
What I'd like to see is a plethora of "quick, loose, and modular" adventures. Kind of like the DCC modules that Goodman Games put out for 3.x. WotC has stated that they basically want to do "story oriented" stuff. To date, that's basically meant "adventure paths in hardback". This leaves the field wide-open for competent writers to fill in the blanks....you know, all that stuff that happens between saving the world. Every adventure doesn't have to be Lord of the Rings...there's a lot of room for Hawk the Slayer or even Knights of Badassdom.
^_^
Paul L. Ming