I'd definitely be interested although more for the possibility of better presentation and organization than 4E rules (I'm a fluff guy/setting junky). I find the Scarred Lands books to be rather difficult to browse through; I'm not sure exactly what it is, but it is hard to skim through the Ghelspad hardcover, for example, and get a sense of the setting compared to, say, the new Eberron book. It may be that the formatting is too monotonous, but I don't really know.
On a side note, is there a world map of Scarn in existence? If not an official one, has someone cobbled one together? I'd like to get a sense of how the different continents are located in relation to each other.
(Note to Fiery: A world map, please!)