For Halo 4 I would like;
The magnum from halo 2, the beam rifle or maybe an upgraded version?, more, more, more, MORE GUNS!!!!! because simply everyone loves a big variety of weapons, more armor customization, I liked the credits system in Reach but it seemed as if it was hard to get those armors pieces upgrade possibly? I've seen people post about those little details to add to your suit(ex. scratches, cracks in a visor, ect.) that would be very good because in the past Halo games everyone had their own combination of an armor set up, but those little details would make a BIG difference it would show that, that's the players suit of armor, know what i'm trying to get at? And Also bring back some maps, at the same time add lots of new one.
As for forge itself I don't have much input in it beside this one thing, they player should be able to change the texture of the object(ex. Covenant, Human, "aged" what i mean by that is like a old decayed type of texture, ect.)
Story Mode: By what I've seen in the E3 demo game play, and the director commentary, it seems fine. But there is one thing it may just be me but Halo 4 has more of a "Crisis" feel to it, which isn't bad don't get me wrong, Crisis is a good game but..hmmm i don't know how to explain it.
One thing I personally didn't like in Halo: Reach, was the perks you could choose, I think Halo was fine without them. DO NOT add jet pack, or armor lock.
Most of all I do miss that classic feel of playing Halo, and I see the battle rifle is back that is good, i miss it!
Anyways that's all I can think of at the moment, feel free to comment on this post and throw your ideas in as well.
@VynceVaccari, Follow me on Twitter.