here's my idea 4 a sequil
My idea 4 the sequil is the last sonic clone made a ton of evil luigi clones inside an abanded warehouse. after coming back 2 life (because mario has a 1up) he kills all luigi clones and finds the REAL luigi traped inside a cloning machine where mario fights the last sonic clone. However before the last sonic dies, he turns on a self-distruct button, mario saves luigi, they jump out of the warehouse before it explodes. They leave knowing the real sonic is someware, and they WILL find him. the end (not bad, huh?)