Yes, there are likely several. The 'Dark Eric' and 'Innocent Sookie' dynamic can lead to some really interesting fanfiction. Some might focus on the power imbalance between them and how their relationship evolves in a world filled with supernatural elements, like vampires and other creatures.
Another theme is the allure of the forbidden. Their relationship is often seen as something that goes against the norms, either in the vampire - human world or within their own communities. This adds a sense of danger and excitement. For example, in many fanfictions, they have to hide their relationship from others. Also, the theme of redemption is quite prevalent. Eric's dark nature often needs to be redeemed in some way through his love for Sookie. In some stories, he has to overcome his past deeds to be worthy of Sookie's love. This makes for some really engaging character development.
One popular 'Dark Eric and Sookie Fanfiction' is 'The Viking's Bride'. It delves deep into their complex relationship in a rather dark and alluring way.
Fanfiction.net is also a place to check. It has been around for a long time and has a vast amount of fan - created content. Just use the search function and type in relevant keywords like 'Dark Eric' and 'Innocent Sookie' to see if there are any stories that match what you're looking for.
One common theme is self - discovery. As Sookie becomes smarter, she discovers new aspects of herself. Another theme is the evolution of her relationship with Eric. With her increased intelligence, their dynamic changes, sometimes for the better as they can communicate more effectively.
A theme that frequently shows up is the power struggle. Eric is a powerful vampire and Sookie has her own special abilities. How they deal with power differences and how it affects their relationship is often explored. Also, themes of loyalty and betrayal are common. Their friends and enemies play roles in testing their loyalty to each other.
Love is a very common theme. Their relationship, whether it's a slow - burning love or a passionate one, is often explored. Another theme is the supernatural elements, as they are both part of a supernatural world. Danger also comes up a lot, like threats from other supernatural beings.
In this fanfiction scenario, it could lead to a whole new dynamic in their relationship. Sookie, as a human, has her own set of morals and values. But becoming a vampire would change her completely. Eric might do it out of love or perhaps for his own gain. If he turns her, she would have to adapt to a new way of life, dealing with the thirst for blood and the vampire hierarchy.
Power dynamics is another theme. Eric is a powerful vampire and Sookie has her own special abilities. Fanfictions play around with how these powers interact and affect their relationship. Sometimes it's about Eric protecting Sookie with his power, other times it's about Sookie using her gift to help Eric in some way.
One great 'A Smarter Sookie Eric and Sookie Fanfiction' could be the one where Sookie uses her new - found intelligence to solve a mystery in the vampire world that involves Eric. It shows her out - thinking some of the older vampires and really taking charge.