I think I have read something similar too a while back but I can't really remember the reason
Also it wouldn't require an added setting or anything but just make the current settings work a bit differently (basically work the way any game like val should work)
you can already select the ratio, but you have to select between a limited number of options, I personnaly don't run under Nvidia so having strecthed is way harder and a bunch of ways are potentially bannable
Please no, true stretch is an aesthetic abomination. And if all pros feel like they have to play it, viewers inevitably have to watch it sometimes. Keep it out, it does not need to be part of the game.