What I would say here, pragmatically is that without you having physical possession of the original photos time and date stamped (and even location stamped) showing the damage the day you took possession, you have limited recourse. Your recourse is already limited legally because you did not demand a We Owe slip. If you had pictures you could at least make an argument that they knew about it, but even then, you deciding to take it and drive home with no other action documented really hurts your case.
This is an unfortunate circumstance and unfortunately, legally, the dealer really doesn’t have to do anything. You signed the papers before inspecting the car closely, did not demand a We Owe slip, and then drove home 1000 miles. At best, anything they do is to prevent damage to their reputation.
Be glad this is a lease and not a car you own.
Just my $.02.