2. Drawbacks of PLL: The Preview window can not be enlarged, thus it is extremely difficult to use it as a processing software, any ideas to improve this?
I can resize it up to full screen by dragging the corner.
3. There seems to be no difference between Landscape and Picture (Landscape), but why are they two different image-tone as listed in PLL?
I have only used "natural".
4. PLL tends to generate a EXIF item called Component Config, and the value is YCbcr, what does this mean?
I've never seen that. I save the Exif list generated in PPB. To me, only a few exif values have any meaning once the image is processed.