Campaign Mode
I'd like Campaign mode to be treated just as important to the game as Multiplayer mode. All too often, Campaign mode is treated lightly and given minimal treatment (both in size and scale). Please make the levels big enough and long enough that you feel you're getting $60 worth of play out of it. Campaign mode isn't something easily expanded by DLC. Please make it appropriately long. For example, Halo 3: ODST was too short. The longer the levels, the better. 10-12 levels is a good number with each level lasting at least 4-5 hours of play per level. That would be a minimum of 40 hours of Campaign play alone.
Co-op model
Please add an AI co-op companion abilitiy. I've always missed all of these achievements because I never had anyone to play this part of the game at the time. While I may be able to find someone to play with now, I don't really want to go back and do it years later. I'd like to join in on the co-op play using an AI companion while the game is fresh.
Multilplayer
As for other aspects, Multiplayer gaming needs a paradigm shift. Pretty much every multiplayer game degrades rapidly into death match even if it's a team event. I'd like a multiplayer where the player is penalized for death match behavior during a team activity. Specifically, having their score reduced or temporarily removed from the game when working against the team instead of contributing to the team activity. I'd like to see more single team activities with puzzles that open new team abiities. As teams progress in abilities, they can then participate in higher level activities. I'd like to see teams that exist by name so you can join your team at any time and contribute to the team. I'd like to see team events against AI team opponents. I'd like to see team activities that require active team members to be in specific spots and do certain key things to open up items, hiding places or garages full of ammo and guns. I'd like team events where teams have to accomplish certain tasks to open up more of the level and where a level might have 4-6 different sections.
Theater
My number one request.. Please do not remove Theater from the Halo Franchise. It wasn't in Combat Evolved and this was sorely missed. I do realize that it wasn't in the original Combat Evolved, so I didn't expect it to be added to CE, but I was hoping. On the other hand, because Theater has been in every Halo since Halo 3, I'd be sorely disappointed and feel somewhat cheated from Halo 4 if the Theater were removed without reason.
I want the Theater mode to be retained, refined and enhanced,.. such as, saving videos and screenshots. Specifically, I'd like to be able to have more lens capabilities, ISO types, film types and depth of field. Basically, I'd like the camera to act fully as a camera. Also, I'd like to be able to turn on and off the landscape buffer on the camera. Sometimes I need to get very close to an object to get the shot. I'd specifically like to get even closer and I'd like to turn off the bumper when the camera gets close. I'd like to be able to convert videos into a format that can be uploaded to YouTube in 1080p. I'd like to be able to download these videos and string them together in an outside package like Pinnacle studio.
It might even be a nice touch to allow alteration of the lighting to be more dramatic for the still shots.
3D Model (specifically high res)
While this isn't 'part' of the game, I'd like to get a copy of the Master Chief 3D model to use for rendering fan art. It would be great if this were included in the special edition of the game either as a downloadable or on a DVD included. I'm fine with agreeing to a non-commercial use of that 3D model.
After all, the artists do all fhis great work, but we can't ever admire it in other ways other than in the game. Just as DJs can get stems to remix Lady Gaga's latest track, I liken getting access to the 3D models for a game in the same way to create a 'remix' using these 3D components. Getting the environments would make it even better.
Level Specific Requests
One of the key things I Ioved about Halo 3 was the skulls. Not so much to use the skull abilities as most of the enhancements were pointless. No, the thrill wasn't in using the abilities, it was in finding the skulls. I'd like to see a lot more of these easter eggs in this game. When I'm just a bit weary of shooting yet more Ghosts or getting barraged by tanks, I'd take a break by hunting the level for cool things to find. A small diversion, yes. But, ehough to let me get a fresh start on a level where I might need some strategy to get through. When adding easter eggs like skulls, make them a challenge to get. That is, place them on top of things that might require a bit of thought to locate and reach.
On the point of strategy, please add levels that require thought more than run in with guns-a-blazin-shootin-everything-in-sight. While this can be fun once or twice, if every level is this way, the game gets tedious and monotonous. Vary the levels by what you have to do to get through them by requiring thought strategy to complete the level.
Thanks.