Super Mario Bros Z/ New Story Ideas?

Hello guys Some days ago, some of my friends showed me a mario show in the internet. Is all about mario and sonic adventures, at least the first season, but most of those characters fights like dragon ball z fighters. You need to find all chaos emerald located in all the mushroom kingdom, with the help of sonic and shadow. The main antagonist is Mecha sonic, which is a robot who wants to find all chaos emeralds as well so he can destroy the world and turn more powerful. Is a very fun show, at least I enjoyed almost every part of the series. If you want to watch all 8 episodes that has been released till now, you can check the following website: Super Mario Bros Z

Anyways, after watching this show, I have been inspired to write a story. About what? I have been thinking during today, and i think is going to be about the mushroom kingdom. Basically the story takes place after the thousand year door paper mario game. One of the main antagonist of this story is going to be...Shadow King. Yup, he is the brother of shadow queen. He is back to take revenge of all that Mario did to his sister, but this time this villain has 3 big purposes. Destroying Mario, the Mushroom Kingdom, and awake the Shadow Master of all Dimensions.

Im not sure if is a good idea or not. Im going to need opinions about this story. If you think is bad or is good, you can share and tell me if is a good idea or not. Anyways, if everyone wants me to start the story, i will as soon as possible

Thats for now, see ya around the forums!