Dear 343 Industries and Readers,
I believe that Halo 4 should have more enemies (unlike the previous halo series where you got fed up of fighting the same enemies.)
I believe that this adds more diversity to the game and makes it more exciting. New enemies could be like:
-Human Heretics (Rebels)
-Super Scarabs to destroy (more challenging than the Halo 3 ones)
-Any new creature that is part of the covenant
-The Flood
-A new civilization that threatens Humanity (other than the covenant) for example: aliens ....
Feel free to add your opinion and I hope this contributes to the improvement of this game.