Simple enough, what are the 3 things you are looking forward to and what are 3 things you are not looking forward to in Halo 4? It can range from anything like the textures of the foliage to major gameplay mechanics, just say it! Adding a little reasoning behind what you say wouldn’t hurt either!
For me…
Looking forward to…
-As simple as it is, the new campaign and spartan ops (lumping them together because spartan ops to me, is a continuation of the campaign) I’m looking forward to them because, hey I love the lore behind the Halo universe, more is always welcome!
-The new thruster pack armour ability. No specific reason other than I cannot wait to try that bad boy out.
-As egotistic as it may sound… I am also really excited about the Arctic BR skin from pre ordering from EB Games. I know it’s not just for Canada but I feel a bit of Canadian pride wash over me just thinking about using it. Although, I do wish it was a skin usable for the AR as well. Oh well! 
Not looking forward to…
-The new looks of the elites/ grunts. The elites look like giant slugs and the grunts… well I thought I was supposed to be killing grunts from Halo, not wretches from Gears of War haha
-Now, it hasn’t exactly been confirmed but speculation from a few pictures pointing out how the ODST’s might look… I nearly cried. If the speculation is correct, then I am not too pleased with how the ODST’s turned out 
-I am not looking forward to the impending heart attack from excitement I will surely get after obtaining Halo 4’s LE. Simple little joke because I don’t really have anything else that I’m not looking forward to.
So… lets see what you guys and gals say!
I’m looking forward to unlocking the Recon armor in Halo 4 it looks really neat.
I’m looking forward to getting the Forest Skin from Gamestop to put on my Recon armor.
I’m looking forward to the Campaign and Spartan Ops.
I’m looking forward to spending hours trying to come up with the perfect loadout.
I’m looking forward to getting the Limited Edition of Halo 4.
I’m not looking forward to the trip to the hospital (heart attack) and the detention (Not paying attention because I want to go play Halo 4.) from school I’ll get on Nov. 6th
Looking forward to:
-Epic campaign and spartan ops
-Sprint as a built in feature, actually allowing me to use other armor abilities
-Three different forge environments with improved forging tools
Not looking forward to:
-Jetpack, assuming it’s the same as it is in Reach
-Potentially unbalanced weapons, although it does look like 343i has taken into account feedback from events, and is trying their hardest to balance everything. So maybe this one doesn’t really belong here. It does look like they are doing a fine job.
-The wait! Ahhhh!!!
I’m looking forward to almost everything
I’m not looking forward to Wall-E (aka Sniper’s look)
I’m not looking forward to people calling the Scattershot the Scatter gun. Seriously this is Halo not Jak lol
Looking forward to:
1.) New and exciting campaign, which continues the epic adventures of the Master Chief.
2.) Spartan Ops.
3.) The three new forge environments, with their own unique pallets. So much replay value.
Not looking forward to:
1.) Some weapon designs and a LOT of weapon sounds.
2.) No Brutes?
3.) A lot of weapons from Halo 3 and Reach removed in Halo 4.
I’m looking forward to the campaign and spartan ops as well. The hardlight shield, its something I could see myself using quite a bit. mostly for when I just get out of a firefight and my shields are down no clean up crew for you. And then I’d have to say all the weapons new and old.
What I’m not looking forward to is the possible lack of brute weaponry.
And thats it.
Looking forward to.
Infinty slayer,it looks awesome.
Spartan ops, cant wait to play it with my friends.
The return of the cheif.
Not looking forward to
The look of the covenant, they just dont look like the enemies im used to
No health bar,or health packs
No armor lock, im gonna miss taking out ghosts with out firing a weapon.
What I’m Looking Forward To:
Campaign - Simply because were continuing the story of the master chief and get find out whats happened and what is going to happen to him and the crew of the infinity
Spartan Ops - A new take for the halo series which is looking and sounds promising and i’m looking forward to playing
Multiplayer - Multiplayer is looking great and very promising like always and i’m loving the edition of loadouts and specialisations which will greatly change the way we play but it will still feel and play like halo but we will have more freedom with what we start with but if that doesnt fill people’s cups there will always be vanilla halo avalible
Armor Now Unlockable Not Purchasable - WooHoo!
What I’m Not Looking Forward To:
Plasma Pistol In Loadouts - promotes noob combo and will be greatly frowned on
Thats it for me
Things I am looking forward to:
-Forge, and making my 1st map
-Campaign and spartan ops, hopefully will have lots of replay ability!
-Playing with friends, I heard there’s a new group/clan system
-Being better than my brother at the game 
-DMR and armour skin free for preordering from GAME
-New weapons and vehicles
-New maps and game types
-Everyhing 
Things I am not looking forward to:
New weapons sounds for SOME weapons (ATM needler doesn’t sound right, from what I’ve heard)
-Jeoff (the announcer)'s new tone of voice, though I’ve been told its a placeholder
-New multi kill medals. I think they’re placeholders (and hope)
-Having school, less halo time 
Very nice replies everyone! Love seeing what you all are looking forward to and not looking forward too. Some pretty interesting stuff as well, completely forgot about the brutes!
Looking forward to:
A new era of Halo, a new storyline and seeing the Chief and Cortana again.
Not looking forward to:
The butchered Halo artistic style
Looking forward to:
Campaign
Spartan Ops
Customs/CoOp with my friends and family
New armor with skins
New features in forge
Not looking forward to:
All of the community complaining about stuff like fall damage
Little kids playing MP
MLG Want-a-bes playing MP
Any and all messages from random people saying “Send me 1600 -Yoink!- Points, and I’ll unlock the Recon Helmet for you in Halo 3, ODST, Reach, and 4!”
I’m looking forward to the railgun that seems pretty cool
I’m looking forward to the custom load outs, the hardlight shield, and new threats to MC and also Spartan Ops.
I’m not looking forward to the date 9/6/12 that means being busy and could not play it cause work, work, and you guessed it work.
What ranking system will be implemented in halo 4
Looking forward to:
-Exploring Requiem in the new campain.
-Spartan Ops.
-Playing around with the loadouts to find the perfect one for my playstyle.
Not looking forward to:
-People on the forums praising Halo 4 as the second coming of Christ for a few months, then jumping onto the Halo 4 hate bandwagon that will inevitably rise up, just like the ones for Halo 3 and Halo: Reach when they were the newest game. (I probably worded this badly.)
-The inevitable re-balancing of the game’s sandbox that will happen when someone discovers an OP loadout combo and every -Yoink!- starts using it.
-The new look of the Covenant.
I’m looking forward to everything. I’m certainly not stressing about how certain things look.
Looking Forward To:
Getting the game and playing multiplayer, spartan ops, and campaign.
Trying out all the new weaponry, AAs, and perks.
Unlocking the HAZOP armor.
Forging maps to play with friends.
Put together a Machinima project.
Form a clan with the new clan system.
Not Looking Forward To:
Not being able to play as elites.
Campaign’s Chief clones.
Waiting to unlock the HAZOP armor.
Spartan Op’s missions being so short.
Im looking forward for:
Spartan Ops
Campaign
New enemies and new tactics to fight them.
Im not looking forward to:
little kids on mic yelling that because they suck at this new game
It launches at the middle of the week , i have school to go to goddammit >:(
I cant think about anything else now.