Guess you have never tried the FOV_test ?.....180 covers almost ALL your non-peripheral vision from 9 to 15 o'clock, 200 is already behind your X axis (behind your shoulders !!).
Yes, it would be cool to have it (and I will be one of the many happy 8K users if this will happen), but apart for eliminating that very little black edge at the very extreme end of view, it has very little PRACTICAL use.
Just saying this....individual preferences aside.