I think most people in this audience are aware but in case some are not, the other thing with LED is that it is not possible to dim them. So dimming works by making them flash at a higher frequency than what the human eye can see. Which is ok-ish for humans, but will drive dogs crazy as they see at a much higher frame rate.
That's not fundamental. They could flicker the individual LEDs at different phases. A typical bulb contains many LEDs. This would cost money, of course.
