A common use of Zen mode appears to be being undistracted / unintimidated by opponent's rating "during" the game itself; but interested in the rating of their opponent after the game finishes (Eric Rosen does this a lot, for example).

The current way to 'achieve this' functionality is to toggle zen mode whenever the game is over; and remember to toggle it back on before the next game starts. This is not a great user experience, and leads to mistakes where the user forgets to toggle, and sees the rating before the game.

If there is interest, I will submit a PR. I imagine it would look somewhat like this: