ok I've started modding this version of Halo and just wanted to show all of you the progress.
Mod 1:

Mod 2:

Mod 3:

Mod 4:

Mod 5:

Mod 6 & 7:


Mod 8:

Mod 9:

Ok let me explain how this works:
Mod 1 is done with the pistol. In my mod I have the pistol firing... well people.
Mod 2 is a different skin for the Rocket Hog.
Mod 3 is a chain-gun rocket launcher.
Mod 4 is my tester(Kirono) firing strait down with the shotgun which now fires Fuel Rods.
Mod 5 is a Spartan Ladder made by the pistol.
Mod 6 & 7 is a before and after. 6: A bunch of Spartans piled up; 7: after being shot with the Fuel Shotgun.
Mod 8 is, if I remember right, a dead body that was shot with plasma grenades out of the assault rifle at the peak of his flight.
Mod 9 is the new jump along with what the Fuel Shotgun fires and how many.
If you would like to try this mod I have a link
here, but make sure you have a back-up of Blood Gulch in case you would like to play the original.
I am currently working on new skins for everything.