The dual wielding worked too, in my view. You could defend yourself at close range whereas with the Assault Rifle, unless you have an aid from a grenade or melee, your death will be near from an DMR or Needle Rifle wielder. SMG/Plasma Rifle, SMG/Magnum and SMG/Plasma Pistol wrecked people fast, and capable of multiple amounts. We don't have that now, nor did we in Halo 3. The AR has to go.
The maps I completely agree with. We're in the same position as we were in Halo 3. Yeah, we have our diamonds in the rough, i.e. Valhalla, Standoff, Highlands, Anchor 9, but in Halo 2 you found studs everywhere. You found them in 4v4 games, you found them in Big Team Battle - in Slayer, Skirmish, BTB, Doubles Team, etc. It's truly spoiled us, I think.