I'm wondering if it is possible to make the Piccolo SD674 output a widescreen resolution, like HD-Ready?
Is it possible at all and just some fiddling with Picasso64Settings?
Simply from the perspective of bandwidth, it should be possible if you restrict yourself to 8-bit chunky modes. The Cirrus chip on it is rather flexible and can generate whatever timing you need, including HD-Ready, and probably even full HD at 8bpp (but not above).
It might require a bit of fiddling, though.