hmm cant really say its useless, its just inaccurate just like that leaf fuel economy display. tho its stokes whoever you bring in the car, its pretty funny. I use the timer on the screen also, that one is accurate.
Yeh its really a personal choice, if you are more into a comfort or more on the drivetrain kind of things. But the car is considered as sports luxury car, so may want to get more out of that "luxury"
for me having TV is pretty useless nor the DVD, because i dont drive the car alot as it is only a weekend car or once or twice on a week nights so i wont really get to enjoy it at the moment, but i definately will get it later on down the road. also shouldnt really have a problem in terms of converting your entertainment to an after market ones , it sbeen done before its just really down to what you really want or need personally.
anyway thats just for my point of view, i was once in your shoes.