Often times the number of options is limited early on in a new car's production in order to limit the exposure of the plant to potential problems. Fewer options means fewer things to screw up. This is an all-new car, in an all-new plant. The fact that they even offer as many choices as they do seems pretty impressive to me. I know it is all computerized and there should not be any issues, but you never know. Many items and features have been delayed introduction for many decades now.
...
For all we know, the production has halted 20+ times to work out glitches on the line. Give them a chance, and be patient!
What I mean is this: they've got 5 engine/trans combos, 3 interior material choices (each with its own fixed lumbar/power/heat situation), sunroof or not, something like 3 or 5 stereo/navi choices, and several other little options that have no parts/placement relationship with anything else like KESSY, garage opener, r-v camera (or at least designed-in port on some radios, at this point), wheels.
All these things are in production, though some have (beyond demo cars possibly judged too iffy for sale) come on line more recently then others, and perhaps the V6 hasn't yet at all.
If it's going to take 3 months to build a non-stock car to order from the current short menu of choices, why can't they disconnect the above features from the trim packages and make them available individually?
If all chosen features are OK in production, it would be produced as slowly as it is now.
If there's a problem with a particular feature, it would delay the whole car no more than any package car with that feature is delayed right now.
Whether or not there's any trouble, the limited packages for made-to-order cars just make no logistical sense - not even for parts ordering.