Beyond that, there are some gameplay conventions I don't particularly care for these days. One is the running mechanic, where you have to hold a button to run and can't fire your weapon while you do. I feel this does nothing but slow down the gameplay. ... I also can't say I'm a fan of preset loadouts for each individual player, and instead like having a set of six weapons per match. I feel the game is more balanced without every weapon in the game possibly coming into play. Perfect Dark has none of this nonsense and it is a better game for it.
I've been playing some combat challenges and I would kill for a run button at times. I don't know how many times I looked to the onscreen indicator just to verify that I'm indeed standing up and not crouching because the game can be so slow at times.
Also at least with a preset loadout when you respawn you have some weapons. I get really upset when I get killed two seconds after respawning. Or if you're playing somthing like a king of the hill mode you have to waste time gathering up weapons and shields because you know the enemy is going to be fully loaded.
These instances might be different when playing against real people, but so far I've only seen two types of sims. Meat sims which are a joke and everything else which all seem to be too smart.