308 gt premium SW driver here, here is what was missing from mine and some corrections for your orriginal post.
electric tailgate is only availbile on SW model so you would not of got that, I was lucky in the mine came with the wireless charge plate.
peugeots automatic parking assistance is not what you think, there definision of that is surround cameras with lines on screen :O which is shocking to say the least.
Agree with others on the 3d screen having had a cover car with it, its not a biggie really, and a very silly concept.
But current issue going on is I went to use the heated stearing wheel it said it was on but no heat, booked the car in and was informed by the tech in the 20 years he has worked for peugeot this is the first time he has come accross a car that has the button for it, but no heated wheel and a possible missbuild, in contact with peugeot now and hopefully it will get addressed as a heated steering wheel is more improtant to me that 90% of other extras, esepcially in winter..