I really dislike how Spartan IVs look, especially compared to the Spartan IIIs in Reach. Reach Spartans are wearing durable metal body armor. Halo 4 Spartans are wearing bodysuits with armor bits haphazardly stuck everywhere. There are so many gaps in the armor it looks ridiculous.

The Halo 4 Spartans also have weird, exaggerated, overly busy, cartoonish designs. They remind me of comic book superheroes. I'd love to see an overhaul of their art style.

While we're add it, I want campaign theater back. And skulls. Maybe even a skull that lets me use my multiplayer Spartan in campaign, a la Reach.