A new thought of game mode

I have an idea for a new mode. Briefly, every team has a spy. This champion will have higher income and higher exp increase speed. What he needs to do is just hide him not discovered by others. For example, when the game start, both blue and red team have a spy. The spy's job is he needs to protect himself not to be discovered and at level 11 he will change to their original team, The other champions' job is to limit or liberate the spy to develop. depends on which team they are in. Blue team helps red teams' spy and the red team helps blue team's spy because at level 11 they will back to their original team. Please feel free to talk to me if you need more information.