Some of these things might not make sense if they come back or happen. My top ten are: skulls, a better ranking system, a better way of unlocking armour, better armour appearance, Elites (not Storm), UNSC aircrafts, firefight, new Promethean classes or weapons or possibly vehicles and Spartan-II's or Arbiter to return. Some of these are opinions and some people may disagree with me but I mostly want things that we will all enjoy such as skulls. They were really fun to get and it would be great if they add them in Halo 5.