It's certainly a choice for a game about Nixon to keep Watergate entirely in the background (neither Woodward, nor Bernstein are even mentioned!) I also don't think enough time was devoted to Vietnam. Although see why that might detract from the main plot, it just feels like the author is trying to squash the story.
On the other hand, I appreciate that the author decided to jump off the Nixon bashing bandwagon, which has been done to death (both from The Left and The Right)