Overall, there's been a lot of posts about the seats, but I think the most interesting thing from the Delta website is that the picture of the cabin also clearly includes a menu and an amenity kit. Hopefully that means better food and service than standard economy.
That is a sweet spot that works well for me. Going TATL, I'd pay a few hundred dollars more for even today's C+ seat if it came with actual service/food/beverage options closer to business. In the end, in my opinion, it isn't the seat that makes flying horrible (although I'm 5'6" and 150lb so I know that makes a difference) it is the fact that in Y on most airlines I'm treated like livestock rather than human.