I like the robot idea but I think having a program area would fit better. It is surprising how easy it can be to forget that Renamon is data, a living program. Having an area where not just her mind but her programing gets messed with would be very interesting.
Side note.
It kind of bugs me how there are no visual indications that you are wearing armor. I get that it would be tedious to implement and I am not asking you to. It just bugs me.