I chose story DLC. Because I feel that backstory DLC missions would be awesome.



Playing as other Spartans from Missions or plots that are in the expanded universe (especially in the books) would be epic beyond epic.



What I envision for it would be difficult as it would heavily mod the current engine.

One such DLC could be Operation:TORPEDO.



Playing as a tiny Spartan III super soldier Lucy-B091 or Tom-B292 (hud and abilities reflect the height/age/ability difference please) as you are sent on a suicide mission to Pegasi Delta. It could be 4 player as well as you and your friends make up the remainder of Team foxtrot (except 2 players will ultimate expire). It would be a strong emotive piece with enough gameplay and action to warrent it being DLC.



This could also be part of a DLC package, where you play out the story of the two-4 characters involved. which Also means you could have Kelly and fred reprise their VO work for the DLC and even go so far as to include Kurt, and the escape from Onyx. A trilogy pack if you will. Start with Kurt and his backstory with fred/kelly/John. and How he dissappeared as well. transition into his involvement into the spartan 3 program and play as spartan 3's, then ast forward to Kurts ultimate sacrifice. A good opportunity in my opinion.



Edit:

Also since the SPI armor and the old school Mjolnir armor didn't have shielding the game play would remain roughly the same. except the SPI armor would have active camo, and melee damage should be reduced. (Also an opportunity to put SPI armor into multiplayer for aesthetics)