Aside from the lack of red X's, the HUD also lacks a compass, which also hinders communication & navigation, and it lacks a health bar even though health is essential information (apparently, 343I made the same conclusion as Bungie made in Halo 2 & 3 that if your health regenerates, you don't need to monitor it, which is BS). Also, the lack of regular weapon spawns makes communication and navigation hard, as do the overall aesthetic of many maps (e.g., I can never tell which side is which on Adrift). Then there's all the other features that are missing, including:

- Saved films for Campaign

- Campaign Scoring

- Multiple gametypes & gametype variants, including One-flag CTF, Invasion, Assault, and Race

- Firefight

- Various custom game options

- Various usability aspects of Forge (e.g., fine-tuning by clicking in the left stick)

- Film rendering and online screenshot sharing

- Playing as Elites in MP

And let's not even get into all the unwarranted changes to the core gameplay (e.g., Skinner boxes, perks, ordnance).

Like Bungie before them, 343I had a huge team of (supposed) game industry veterans as well as the financial backing of Microsoft and a development cycle as long as any of the other main entries. There was no excuse for them releasing a product with fewer features than the previous game. Halo 4 should have been at least as feature-rich as Reach, if not more so. It's like Cody said: "In most game sequels, when there is an awesome feature in the previous one, if the developer is good, then it’s not only included in the sequel, but sometimes even made better. That’s the whole idea behind a sequel. Same type of game, but make it BETTER. Removing features is a pretty good way to make your sequel WORSE, negating the whole point of making one."