One reason that I can think of for pull in stalls is the huge amount of grouching people do with other types of stalls because they won't be able to charge while pulling a trailer. Pull in stalls eliminate that problem.
Yes, especially since Model X is sold with a towing package. I created this thread to attempt to track pull-in stalls that have enough rear clearance to charge without unhitching.
In many cases, it's going to be difficult even with pull-through spots. I haven't been over to the Napa site yet, but I've got to drop some wine in American Canyon in the upcoming weeks so I'll check it out then.
Will there be a get-together for opening? I'm interested, if so.