Yeah I agree with the issue of tangled leads. I also think it is generally a good idea to have everyones full attention at the critical points of the flight.

By the way, what do the screens display as you walk onto the aircraft? Do they also turn off for take-off after the safety video?

Also slightly unrelated, but when boarding a 747 a few years ago I remembered they were playing some classical music over the PA. Haven't traveller on one of those aircraft since, and haven't noticed this on any of their other aircraft, do they still do this or am I going completely nuts?