Dual weiding is such a sensitive feature. The main issue is that akimbo secondary can have a tendency to overshadow a lot of the normal primaries a tad too much. All that needs to be done is make sure net effeftivity is capped at 50% performance boost by taking away from accuracy and melee/reload speed, and incressed recoil and all that stuff. Also, unlike in Halo 2, do not increase maximum ammo storage with each additional weapon of the same type. (You could bug it to wield 3 smgs or magnums for a ton of ammo, the third in your reserve weapon slot, and that bug is likely to return.) As much as I want it back it needs to be done cleanly.