1. Lag is not an issue for me. My connection is strong, and this is launch weekend, so very good I'd say. Not seeing the all red bars and me green, they all seem to represent correctly. What doesn't for me are the Weapon images in the loadouts. These almost never load before I have had to select them, and as I would use the images of the weapon to identify the class, I sometimes choose the wrong one. Quicker portrait loading! Same goes in game or out.
2. Killcams. These have always been an issue in Crysis MP, and unlikely to see big remedies, but they truly are a mess compared to the rest of the polished experience. The sound doesn't sync properly. The animations are unrefined and jumpy. And the summary moments reel at the end is the worst. What a ropey way to pull you out of such a slick match. They jerk one into the next, and get awkwardly cut off at the end if you have more kills than it has time. Find some way to smooth between these and only show the number it has time to show.
3. Pop-In - I have installed it to 360 HD, but still the pop-in mid-match is noticeable in the environments after spawn. Sometimes weapons do not fully load properly either.
4. That's it! Loving this altogether. I hope there is regular community not-splitting support to come to keep it fresh, this multiplayer package is great. Maybe add a Nanosuit only playlist. I like spears and extraction, but not cell vs rebels, so want all those types to cycle.
And bring us more customization with the DLC. A couple more free camos per gun? Anything to not have the appearance so uniform and robotic? A pinch of individual personality..