I only have one humble request for Halo 4.
Bring this shit back!!
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I loved dual wielding so much in Halo 2. SMG+Plasma Rifle at an enemy and clean it up with a beat down.
Oh and bring back the brute shot.
I dug the pistol/smg combo even more than the plasma rifle/smg in halo 2. Yes, bring it back! And if you only have one equipped, give it a more powerful 2 hand alternate fire. Most people's complaint was just how weak having one equipped was.
Just random additions even though I already posted a while back:
-make sprinting default
-make jumping less floaty and possibly even higher (Crysis 2 I'm looking at you)
-more geometry in maps to play grenades off of (I love when grenade throwing feels like a billiards game)
-get rid of armor lock altogether, good lord!
-tone down rocket launcher...why did they make it even more powerful in Reach?
-better aesthetic weapon design (at least covenant weapons, cause they look like toys)
-A little more weapon feedback, even though they have improved that in each successive game.
-better maps, more maps! This is probably the most important one. Reach's maps were a disgrace.