Leasing a car they already have on the lot will almost always work to your advantage financially. I was considering ordering a base i3 to keep the lease rate reasonable but after visiting the dealer a few times and negotiating pricing this worked to my advantage. I ended up leasing a loaded i3 they had in stock for less than the rate they gave me for ordering a base unit. They told me BMW gave them permission to sell their inventory at a lower cost to make room for future inventory, not sure if this was the case. Of course there was some negotiation to get the pricing down but I ended up with a better car and didn't have to wait 8-12 weeks for delivery.
The one option I did really want was the upgraded audio package. Ended up with this, Giga trim, Parking Assist(that I'll never use), and Technology/Driving Assist.