Many of your problems should be fixed with those updates + some fun additions
For the ones who remember the first foveon DSLR , the SD9 and not the first foveon camera, the polaroïd x530 (which I still have), you will like the new color mode who will rock in landscape photo
Some examples :
In standard mode:
And in the SD9 mode:
Also there is a new gallery on SIGMA website, made by the photographer Kimio Yajima with DP2 Merrill