Not in the series per se, but in its North American release. The last episode of the anime released by Geneon before the company's collapse, episode 10, is titled "Good Things Come to Those Who Wait". Episodes 11-39 would not see the light of day for another full year; many of the show's fans doubted it would ever happen.
Kouyuu's constantly getting lost is a Running Gag of the series. In a side story, when he was brought back to the Koh/Hong residence by Reishin, he was "persuaded" to stay by being told that the house is haunted and the monster would get angry if he tried to run away. Furniture in the house were then constantly rearranged to reinforce the story and to make sure that the boy could not run away to the point that it completely screwed up his sense of direction. While it is done with good intention, it is still a horrible thing to do to a child.
Ho Yay: Oh so much. Occasionally played for laughs in the early episodes, such as when Shuurei speculates that Ryuuki and Seiran might be in love with each other. Even funnier in later episodes when it is revealed that Ryuuki and Seiran are brothers.
Values Dissonance: Advisor Sho's inaction during the Struggle for the Throne, so that a worthy emperor may reveal himself, makes much more sense when you understand how the Mandate of Heaven works.
Woolseyism: As mentioned in Dub Name Change on the main page, some names were altered for the American release. Most notably, Kou was changed to Hong in order to avoid confusion with the almost identical sounding Ko. Hong is simply the Mandarin pronunciation of the character making up the clan's name (Kou is the Japanese reading of it). So technically the name was never changed at all. That it sounds more clearly Chinese in a world very obviously based on Ancient China is a nice bonus.
