I added some of my own.
Scoring system broken. Play a game of flood/regicide look at the table when the game is over. 1st 7th 4th: He's right about this, I have seen weird behaviour too. Also, I tied with four other people for Flood by points but was listed as 5th and didn't get the win - the Flood Victory commendation is ridiculous unless they introduce a team Flood gametype.
"Death Cams" broken: How are they meant to work? On every game type? No one knows because there is no manual.
Weapon balance: The boltshot is an extremely over-powered loudout weapon. It's a one-shot kill with a small charge time. And I discovered the secondary function in a death cam because there is no manual.
THERE IS NO MANUAL.
Broken melee system: I melee an enemy, maybe even got a couple of shots in first, he doesn't die. He melees me back (no shots fired), instant kill. Happens constantly and is very annoying. They FIXED the melee system in Reach (bleed-through) and took two steps back here.Stupid weapon pickup system: As in Reach. "Hello, I'm standing above a rocket launcher, a pistol, and a storm rifle. Pick up rocket launcher. Damn, I got a pistol. Pick up again, damn I got a storm rifle. Pick up again, damn I go [splat... boom! headshot]..." If you're standing near a power weapon in a cluster of weapons, it should get priority. Simples.
Custom load outs broken: This only happens to me when there is a network timeout (black screen). It happened in Reach too. This doesn't justify the bug which is just sloppy programming and more importantly, bad QC since it was a known problem in Reach.
Preferential treatment to people who spent more and US Live account holders (specializations): I don't want to have to buy the VIP deluxe spa weekend package to get access to features in a videogame and Mountain Dew tastes like !#!$. Give me a crab juice any time. This is a terrible way for Halo to go. Plus, I bought my copy in the US and live here but I cannot access the specializations because years ago, I joined Xbox Live in Europe.
Most of the other points I either disagree with or have no experience about the problem. All in all, I like Halo 4 a lot - it doesn't feel like Halo but it is a solid game. Plus, 343 did fix the stupid commendation targets that Reach had (besides Perfection which only works in slayer gametypes so is more likely to be boosted by most people getting it) and fixed the issue of mismatched sides which reduces the amount of griefing/trolling considerably. However, H4 has its flaws, technical and philosophical. Pretending otherwise is sheer fanboy delusion.