First of all, Don't park near anyone else!!! If you can't open your door then you are too close.It seems to be a mix of No and HELL NO's.
I just think the doors are huge and swing way too wide. I'm 6'2" and have to lean way out to close my door if it's all the way open. It's not aesthetics but function. There is a narrow garage I can use but can only open the doors 1/2 way without hitting the walls. I was thinking a modified butterfly on a radial arm that reduces the outward opening swing width by a 12"-18". Have four locking bolts for structural integrity when closed (each could be disengaged manually in emergencies). Keep the door from opening more than 12" higher than the cabin trunk if possible. It's a big car so being able to shave inches for parking using for a daily driver is convenient, my girlfriend is 5'5" and literally struggles to close the door (don't laugh or she'll inform you that your cars doors suck every time she gets in). Mostly I'm just annoyed when people park too close and I can't get out of my car.