Sometime in the future, so that I'm kept busy, I will be planning a cross-over project between Mario and Sonic outside the Olympics and Smash Bros series. I plan on creating at least one season (to start) with at least twenty episodes with Mario, Luigi, Peach, Daisy, Rosalina, Sonic, Amy, Tails and Knuckles as the main characters (see my profile for the clothing that Peach, Daisy Rosalina and Amy will wear in the series). In this series, Peach, Daisy, and Rosalina will have the surnames of Akala, Melemele, and Estela respectively. In my series, The ghost of Prince Ula-Ula Akala (who wil be the deceased husband of Peach in my planned series) will help Peach find love again after he was murdered by Bowser Koopa Junior.
Also, Amy will receive the attire (as seen in my profile) as a direct result of a permanent curse casted on her by Dr. Eggman (dubbed Dr. Robotnik in the series). This will see a slight shift in Sonic's behaviour towards Amy, and in Amy's behaviour herself. Amy's self esteem will be badly hit by this.
In this series, the Mario Gang and Sonic Gang must work as a team to find their allies, and find a way to defeat both Bowser and Dr. Robotnik before it is too late!