Aaron Scheiner wrote:PsF also needs to be de-interlaced at some point, which granted isn't as complex as true interlaced, but if done incorrectly can result in quality loss and additional processing time.
PsF does not need to be de-interlaced. That is the point. Issues arise when something in the signal processing chain assumes the signal is actually interlaced, and unnecessarily de-interlaces it. And cheap de-interlacers just throw away one field, halving the vertical resolution.
Aaron Scheiner wrote:Switchability would also improve monitor compatibility ?
I am aware of monitors which support interlaced but not progressive, but not any which support progressive but not interlaced. So I would think the addition of PsF increases the range of monitors which can be used, not decreases it.
All that said, a software switch would give options, and that is a good thing.