Thanks for posting that.
I've been using bright front and rear flashers for several years. My biggest concern is having an oncoming vehicle turn in front of me while I'm descending a shaded mountain road.
A local rider was
killed a few years ago on a popular mountain road, when an oncoming van turned in front of her. I usually descend that section at about 40 mph, which is the posted speed limit. Maybe a front blinker would have saved her.