Here's why it's a complicated question:
* Yue's sacrifice: Yue gave up her life to save Aang, sacrificing her own happiness for the greater good. This act of selfless love is a major part of her character arc, and it's difficult to imagine her returning to a normal life.
* Sokka and Suki's relationship: Sokka and Suki have a strong and loving relationship built on mutual respect, trust, and shared experiences. It's likely their bond would remain strong even if Yue were to return.
* Spiritual connection: Yue's spirit was bound to the Moon Spirit, making her existence unique and potentially unable to rejoin the physical world.
* Sokka's growth: Sokka, throughout the series, learned to let go of the past and embrace the future. He learned to appreciate the present and the people in his life, including Suki.
Possible scenarios:
* Yue returns as a spirit: If Yue were to return, it's likely she would be in a spiritual form, unable to fully interact with the physical world. This could lead to an emotional reunion between her and Sokka, but it's unlikely she would be able to resume a romantic relationship with him.
* Yue returns as a human: This scenario is highly unlikely, given her sacrifice and the connection to the Moon Spirit. However, if it were to happen, the impact on Sokka and Suki's relationship would be significant. It would raise difficult questions about loyalty, love, and the nature of sacrifice.
Ultimately, the decision of whether Sokka would "dump" Suki for Yue is up to the viewer's imagination. There's no definitive answer, as the show never explored this possibility. However, considering the complex dynamics of the characters and the delicate nature of the situation, it's unlikely Sokka would simply leave Suki for Yue, regardless of her return.