I think the Driver tech package and HK sound are a necessity. I could live without the park assist, but I found it extremely hard to find one with the options I wanted and no park assist. Park assist seems to be the most common option on 14-16's.
Adaptive Cruise Control is what standard cruise control should be. In my opinion It lessens driver fatigue on road trips. I also plan on retrofitting the traffic assist feature, which can only be done if you have ACC.
As for the HK sound, its an option that needs to be ticked because the stock system is so bad. And TBH is one of the worst sound systems I've heard in a fairly modern car. Definitely not what I was used out of a stock system in a German car. The HK also completely hides any REX noise on road trips.
Park assist, I have still yet to use the self parking, the camera is very nice. That's useful I guess. If I had to parallel park more, I might have more to say about it.
Also if you are looking at a 14' make sure it has DC fast charging. Some don't
I'd recommend renting one on Turo or something; and seeing what options you could live without.
2015 Fiat 500e - Sabelt Abarth Seats, Abarth steering wheel,
Competizione Monza Wheels, OEM Euro Led Tails.
2016 i3 Rex
2000 Audi s4 - ASP Stage 3+