I've discussed this issue with my CA before. The majority of 3ers that his dealership sells (really leases) and therefore stocks are the ones that matched the advertised lease deal: 328i w/premium, no other options.
Their #1 3er customer that leases these are mid to late 20s guys with a better than average 1st or 2nd job who want the badge for perceived prestige, nothing else. People like those on this forum that custom order 3ers with loads of options are in reality few and far between.
Therefore, that typical customer will now take a 320i instead and save $60-100/mo. on their lease payment.
2012 Alpine White F30 328i Leather Dakota Everest Grey/Sport Line/Premium/Premium Sound/Technology/STEPTRONIC/Rear View Camera/Heated Front Seats/Park Distance Control/Xenons/BMW Assist w/Enhanced USB/BMW Apps