I had an ID3 out a few months ago for a couple of days extended test drive. I was really impressed with a lot of aspects of it. Really nice to drive, punchy enough, refined (obviously). I quite liked the exterior looks for most part and the tech was very good. The headlights (IQ Lights) were definitely the best performing headlights I've ever witnessed in any car.
What made me stall on it was the interior. I struggled a bit with the seats lack of support, I felt too perched up, like in a van, no matter how I adjusted the seat, it was not comfortable. And the dashboard... my Dad's Caddy van has a better finished dash. I felt that would annoy the hell out of me once the new car sheen wore off. I know the MK8 Golf is getting a lot of criticism for interior quality but the ID3 is leagues behind that again imo. I could probably forgive the dash if that was the only problem - as to be honest, soft touch plastics are very over-stated in their importance. If the car is otherwise nice and fun to drive, you soon forget about the plastics. But I couldn't get past the uncomfortable seats.
I'd definitely consider one again though in future, if they iron out those annoyances.