There should be an option to control and limit the severity of flashing that is brought about with the flash light for notifications accessibility setting. I like to use it because I don't want to make my phone obnoxiously loud, because i can't hear its vibration, and I still want to get a chance to perceive the notifications, but usually the light is too damn bright and I do worry it could trigger epilepsy in innocent passersby. Having an alternative flashing behavior like a smooth pulsation would be excellent.