I really feel like I'm missing out by not taking advantage of the EAP for $4K upgrade, even though this is the second time in my ownership period that this "promo" popped up at the last 10 days of the quarter. All the input on sub-par experiences with EAP features and the likelihood that this will show up again in December is moving me towards "No--wait and see".
Wait and see is logical answer
FOMO is illogical and is a consequence of being a human in a group setting.
What I find funny is FOMO is way more pronounced with FSD than EAP. Right now FSD is where all the excitement is as you get HW3 (if you have HW2.5 currently), and you get all traffic light/sign improvements they're making. Then you'll get to play around with city street autosteeer within 6 months or so. While you're waiting for that you can see how much stuff it assigns as either cones or garbage cans.
Mostly what a person with AP is missing out on in not getting EAP/FSD is the opportunity to have conversations with your car, and the choices its making.
If that's important to you than most definitely go FULL out and get FSD. If you just want things to work than you got plenty to complain about with AP because basic AP doesn't work either.
If you need something to complain about than at least get AP.