For Campaign:
- Bring back the Ceph's affinity for ice, give us some freezing missions, and some frozen multiplayer maps too
- Bring back dual-wielding (like with the AY-69's) (in multiplayer too)
- Bring back squid-shaped Ceph machines
- Bring back the MIKE (in multiplayer too)
- Not really a big thing, but I personally liked having to switch between the 4 modes rather than just stealth and armour. It just felt cool when you got really quick at flicking the mouse at just the right second to switch from speed to strength in order to clear a really wide gap or something like that, and I also enjoyed going around glowing red
For Multiplayer:
- Nerf pummel-rushers (make punching take a really long time to recharge and/or drain energy, and make punches weaker, esp while person is in armour mode). I'm tired of running past someone in cloak and trying to turn and shoot them, but they've already mashed the melee button at light speed so I'm dead. Makes it way too dull and unfair.
- Bring back Power Struggle
- Make it possible (like in a gametype or something) to use the classic campaign Nanosuit rather than Marine/CELL suits
- Have much larger scale maps with higher numbers of people, but also have smaller maps where the number of people is limited (talking about console here, where you can't really change as much; I personally think many of the maps in Cry2 worked much better with 4v4's or 5v5's rather than 6v6, Skyline as an example)
- Bring back vehicles in multiplayer, along with more open maps in which to drive them
- Bring down the damage on the Feline, or give it the biggest spread ever.