I wish the ATS-V had a Porsche PDK 7 speed or audi-stronic, but that doesn't mean it's going to happen. Similiarly, a 6L90E probably isn't going to happen for the simple purpose of vastly over-engineering the car. This won't be a 4300lb 551ft/lb vehicle. It's going to make a lot less power, and it's going to have to move a lot less mass.
Wish list is not a necessary list. Why wouldn't we want more head room with little weight penalty? And 450 WHP is nothing these days. I sure as ship don't want a tranny on the high end of its max torque. Guys are burning up the 80 all the time. People will predictably follow stupid with this car and then complain why did GM make them so weak. It is all moot for me as I will NOT buy this car as an auto or DCT.