One of the ideas I thought worth thinking about is basically a remote control motorised spinning top with an outer shell on top counter spinning to give a frame of reference. The robot would use weight distribution or a moving contact to move in any given direction and the sides would form a blade. Does anyone have ideas on how I could go about designing something like this?

I need to learn through having my first ant weight built and fighting but wanted to throw this idea out there to see what others think anyway. It would be nice to have more risky builds, rather than the safe (because we know they work well) designs to add more variety. That of course isn't a complaint about those builds, rather the fact it is tempting to always do what is known to work. I know my first builds will fall into the safe category for example.