If the Brutes make a return in Halo 5 and beyond, they need to be their own character ( not Elite clones) and need the qualities that made them unique to begin with.
The Power Armor: In my opinion this was a great addition to the Brutes in Halo 3, as it set them apart from the Elites in terms of shielding. ODST took this a step further by giving the Brutes energy shields that would break with their armor. I feel this feature needs to return, so that the Brutes don’t have to become bullet sponges, to make them difficult.
The Spike and Brute Plasma Rifles: Are two weapons that would need to return in some form as they are iconic Brute weapons, or if to stay inline with the changes introduced in Halo 4, then may a Red variant of the Storm Rifle should appear for the Brutes along side a upgraded version of the Spike Rifle.
Berserking: This was one defining feature that set the Brute apart from the Elites. Having a Brute go berserk either upon a teammate dying or their armor getting broken,was what made the Brutes a difficult enemy to fight. This feature needs to return, I want to be frightened when I see a Brute throw his weapon and charge at me.
Please 343 if you bring the Brutes back, make sure you include these features, the Brutes need to be their own enemy not shadows of the Elites.