Video game idea: Don’t Powerup

Concept

Levels contain powerups for the players, every level contains enemies whose powerup state is linked to that of the players. The more powerful you are, the more powerful your enemies. Players can drop any number of their powerups, and thus affect their enemies, but retain, and thus so do their enemies, an inherent one: The ability to attack.

Knowns

• Cooperative play.
• Over the top powerups.

Unknowns

• Score pickups.
• Time limits.
• Borrow forms of attack and defense from other games? Floor zapping ala Lode runner, etc.

Did I miss something?