[wesk05]

Yes - though they are probably not using them alone, and grading is a very specific job. It's not a pure 'picture monitoring' function.

Certainly not! Sony BVM/PVM, FSI monitors will always be preferred. My point was it is not rare to find plasmas in studios.

Yes - presumably because you are adding another matrix operation?
If you stay with RGB Limited you are going :
YCrCb 16-235->RGB 0-255->RGB 16-235 (So one matrix and one scale)
If you use YCrCb Limited you are going :
YCrCb 16-235->RGB 0-255->YCrCb 16-235 (So two matrix operations)
I'd expect scaling to be done more cleanly than a matrix operation - particularly if is it done in the 8 bit domain. (You also then only have one operation that needs to be 601 or 709 compliant?)

Do you know whether the conversion is taking place in the hardware (GPU) or is it Kodi internal processing? I ask this because Amlogic SoCs have the perfect output. Amlogic uses YCbCr 4:4:4 as the native output (and there is no easy option to change it).

I think we are probably going off-topic now