Agree with the following very strongly:
-Grenade damage [Seriously, who do these people blow to get the grenukes I've been seeing thrown around?]
-Grenade radius
-Maps with too many CQC power weapons (Sword Base, Crouchdown)
-Poorly implemented DMR bloom
-Bloom in general
-Armor Lock in general
-Camo in general
-Ease of use of sniper [I just think it should have a far longer respawn time.]
-Sprint double melee [It's horrible. Should take at least three melee's to kill someone who has full shields and health.]
-Sword blocking [Except for with other swords - that makes some sense.]
-Terrible maps
-Unbalanced maps
-Lack of skill based ranking system
-Spawn system [Spawns me right next to multiple enemies on a regular basis. Yes, it's terrible.]
-The sniper's effectiveness against vehicles
-Weapon variety (or lack of)
-Theater downgraded since Halo 3
-Poor forged maps in Matchmaking
-Poor forging on Asylum [Hate that map.]
-Party restrictions in general [Lack thereof.]
-Betrayal system
Disagree with:
-Sprint
-Sprint sword
-Jetpack
-The DMR (utility weapon is mini sniper) [Keeps idiots from running out in the open, plus it makes sense. And have you ever actually tried taking on a sniper with the DMR? Calling the DMR the "mini sniper" really doesn't seem fair.]
-Easy to use radar [I just don't care enough to call this a "problem".]
-Challenges [I like them.]
-Vehicles made of paper maché [I think the vehicles are tough enough. Except for the Falcon.]
-Vehicle combat [I have no problem with the combat.]
-AR starts [I kill just fine with it.]
-DMR starts [I kill just fine with it.]
-Forge imprecise [I think it's precise enough and I can be quite the perfectionist.]
-Too few armory pieces
-Game mentality (everyone's a winner) [Don't care and it's not true.]
-Campaign has no character development [Don't care. It's Halo. Go kill aliens.]
-Campaign is about pushing buttons [The whole game is about pushing buttons, analog sticks, and triggers.]
-Campaign in general
-cR in playlists with already high population ["Let's make everybody have to play stuff they don't like in order to earn credits!" Yeah, -blam!- that idea.]
-No warning when rocket launcher/rocket hog/plasma launcher has locked on and you're in an air vehicle ["Let's make it even easier for banshee pilots to rape people!" Yeah, -blam!- that idea too.]
Ha. Lot of text.
[Edited on 12.29.2011 9:42 PM PST]