I have a small (4") 320x200 LCD screen connected to my 'pi. (Composite).
The problem is that the console text is about 2 to 3 pixels high (surprisingly the text is sometimes readable!). And most X programs assume that I can see individual pixels. The LCD module downscales pixels it grabs from the composite video input to the pixels it displays. Is there a way that I can tell the GPU to present a 320x200 pixel screen to the software on the 'pi and then upscale that to 576x480 for composite display?
Of course having an interface between the screen and the 'pi that actually handles the 320x200 resolution would be much better. But until we get DSI to work this will have to do.