Blind-spot detection improvements

While driving the car in 'manual' mode (w/o Autopilot) cars in my blind spot appear in the same color as all the others on the screen. I'd greatly appreciate it if their color would change to red if they 'coast' in my blind spot for more than - let's say two seconds. Additionally, there is no acoustic warning if I turn on the indicator light while another car is in my blind spot.

I know Tesla already implemented a 'blind-spot warning chime', but having to already be in mid lane-change to trigger the warining chime instead of beeping when turning on the indicator light before you change lanes seems kinda weird to me.

cars are now red when in a blind spot and the line on the road is red