Quantum Suits are not overpowered enough. I suggest that they
1. Make the player completely unkillable, at no cost
2. Give the player unlimited building materials
3. Allow the player to fly, and to break bedrock
4. Cause monsters to ignore the player
5. Allow the player to ban any non quantum-suit wearing players from an SMP server by merely invoking a command...
Great ideas, right? I expect to see this in the next version of IC2.