Thanks for the clarification.There's several dealers offering 11-12% on custom orders and in stock vehicles. Advertised on other forums. Just using that as a baseline for now. Even if you factor in shipping, OP comes out ahead regardless.
Your list of lease deals you've done shows what, in some instances, is possible.
Getting back to your assertion that OP could save an additional $2,500 on his deal -- and you did make it as an assertion, indicating that $2,500 additional savings was there as a certainty -- it would be helpful if you could lay out exactly how that additional $2,500 savings can be found in this deal.
I don't think it's there, on this car, in this situation. But if you will please take us through how you arrived at the conclusion that OP left $2,500 on the table on this deal, we will all be enlightened.