One thing I'd love to see is the inclusion of other countries besides Equestria, with their own landmarks, dominant species, mythology, and political structure. For example, the Mane 6 could travel to Venator, a vast savannah dotted with small tribal zebra villages. It's where Zecora was originally from, and by talking with the locals, the Mane 6 learn more about the culture and mythology of the various tribes that populate the country, as well as learning more about Zecora and why she had to go to Equestria in the first place. The country itself has no unified ruler; instead, all of the different tribes are locked in a power struggle for territory, and as a result, are almost constantly at war with one another. The Mane 6 have to try to help the warring tribes come to an agreement with one another, and unite them somehow. Alternatively, the Mane 6 could go to Terra Antiqua, the oldest and largest empire on their planet. It's mostly a barren wasteland, with ancient ruins of a former civilisation scattered throughout the landscape. The only place with anything resembling life is a giant futuristic floating city, situated right in the centre of the country, populated solely by humans. They operate under a similar political system as we do, as opposed to a monarchy, which comes as a big shock to the Mane 6. Although they are far more advanced than the other nations, the humans that live there are immoral and have no concept of friendship whatsoever, so it's up to the Mane 6 to teach them.