Okay so I just played both of these games and would like to continue something outside of what already there. So if anyone wants to do either rp let me know....here's some ideas...
* SPOILER ALERT*
-play as a group of elite spartans aboard the infinity
-play as a team (spartans likely) that are assigned to master chief but not directly. If he has a mission you hep him accomplish it. For example he's trying to revive Cortana your team takes down convenant ships assaulting his location
Black ops 2:
-play out possible outcomes (this game actually had several various endings (I ended up killing Alex Mason, letting Karma die, spared the black commander guy, and arrested Mendez which allowed him to kill Woods and set off nuclear power plants and more) I think this makes the best ending if you change Alex to being shot in the leg instead (which can happen if you didn't go for the head like it said) also I burned David's friends face off on accident too
-play another spec ops team