"Lichtpaket" is, presumably, the extended light package I've ordered. It includes extra lighting in the footwells and the load area (I think!) and LEDs under the wingmirrors to provide some illumination as you approach the car. Seemed like a "nice" option to have seeing, as you say, it's not that costly.

confirmed

I have an E60 but had an E61 for 4 days last week while mine was in for warranty work.
The auto tailgate was very good, not too slow. I would go for that.
The panoramic sunroof was nice, the way both panels flip up when on vent setting is very clever, allows good air flow into front & back of car.
On the downside, when the panoramic sunroof roof interior panels are closed ( over the glass ) it was quite noisy, a lot of rattles & shaking noise coming from this, even on quite smooth roads. The E61 was only a few days old so I guess this is just the way it is rather than being faulty.

Also I have electric folding mirrors, I dont know if they do this as standard now, but I had this activated on my E60 when in for work, you can ask for it to be set up so that the mirrors close automatically when lock button on key is pressed for a few seconds ( when it would close windows too ). When car is unlocked they automatically go back to normal.. worth asking for if not already set up.