The last 3-4 Ghibli threads have all been on 2017 leases, I don’t even think there are 2016 Ghiblis anywhere on this forum. You can also go to http://ghibliforums.com and search for Sick Ghibli lease.
As far as the discounts, they are not the same as you go up the ladder. The base models ($73-74k) are much easier to get discounts for as they are missing stuff. Once you move up from the base model, you will find that the discounts will NOT be there at all.
As far as specific numbers on a non-base model, here is the last interesting one with all the details and was negotiated. The $488/mo guys just got lucky (refer you back to the Ghibliforums.com for the anecdotal back story). To make that deal work, you will need $19-20k off MSRP