So stick with me here, grant it some of the kill zones would need adjusting and there would need to be a time limit but what about this.
Bonus Round FF-
Weapon Pick Up Enabled
Vehicles available
Enemies Drop via phantom
Grunts for the 1st 5 min
Skirmishers for the 2nd 5 min
Elites/Brutes for the 3rd 5 min
15 min time limit
Bonus round rules
Round starts with no skulls activated
Every 30 seconds 1 skull activates starting with Iron
1 Life for each Spartan only
Once your dead that is it, no weapon restocks. No Target Locator, No Sniper Drop, Spartan Laser, or Rockets only what you can acquire.
Any thoughts, Ideas, do you think this should be a viable option?