I think what made Halo 4 a bit too distant from all of the previous titles was the loadouts. Honestly, I think it's that simple. Halo 5 multiplayer should spawn you with an AR and a BR with weapons on the map, like the good old days. I do like the weapon dropouts though in Halo 4, so Halo 5 should make use out of both.
Halo 5 definitely needs to bring back dual wielding too. And maybe, just maybe, 343 could finally do the favor we've all wanted... dual swords.
Anyways, Tell me what you think.
P.S. Campaigns doin' fine... keep up the great work 343.