As I have said before.. Delta over-markets their product more than any other airline. Delta One "Suites" lol.... well these are just seats with a very large cumbersome plastic door. What do you need to do on a plane that requires you to have a door for your single seat in Business class when Reverse herringbone and other products provide perfect privacy.
The door is a marketing ploy... It will not enhance the actual product. the door was all about how can Delta make the biggest marketing boom... All the things that would make the seat more comfortable are not important to DL since its harder to market.
ie:
Wider
More Cushioning
More space between seats