jeremy should go into Lyoko he has in the past but we don't know what he looks like. it would be funny if he looks like mister puck Aelita's doll he could control the monsters like puppets on a string. or make vodo dolls quickly and make the dolls fight the real ones
I agree with everything you are saying but you know what would be cool if they come up with some sort of science behind the scanners and the spectres are they going into the pathways that lead to the brain to and giving the sigls instead of the brain. and how do they give the person they are using super speed or strength.
or they make Jeremy and Aelita go on a date in Lyoko. the same for Ulrich and Yumi.