Peek or a lean function would be a great improvement but I dont think its needed at this time.
Here is a few things that would compliment game play in the near future.
Melee
Hand weapons.
Max weapons. (can only hold 2 weapons at one time) Might be scriptable but Im not a scripter.
Lean.
Prone/Crawl.
I am a very blunt person. I have NO filters in communication. I say exactly what I think and feel. If you think im being abrasive, its probably a personal problem because usually, Im not. Win 7 64, AMD T1100 Thuban cooled by Thermaltake, 16GB GSkill Ripjaws series 10-9-9-9, 4 HDD's Saphire 6950 Flashed with 6970 Bios and all powered with Corsair CX750M