Despite you idea being done and I tell other to put that kind of idea in their game. It still is a good thing that your think about it even though you never seen it before. If you keep thinking you will hit more original ideas. One way is to see outside the box. For instance the idea you said can be seen as:
1 you pass a level and the computer selects what goes up
The opposite of the pc is you so
2 you pass a level and you select what goes up.
Break it down to simple explanations and rearrange things. This is just one view of it.
Too bad I don''t see fighting games use that kind of system
