I was playing Destiny last night and we got to talking Halo and someone brought up a great point I didn't think of much. After playing Destiny, some folks are leery of having to use the same old BR, AR, Pistol combos. Destiny really has spoiled us with variety of weapons. Halo does need to mix it up.
Yeah, but destiny can't/won't be competitive and balancing is a big concern. Also, as other mentined, req packs will provide you those other weapons that have different features/skins. You'll also have other items to aquire other than weapons to customize your play. Sure there are only about hundreds of variantions at launch but i expect them to increase that in the following months after it's release.
A little comparison list:
Destiny
(Halo)
Hand-Cannon/Sidearm
(Pistol/Magnum)
Auto-Rifle
(AR/Storm Rifle)
Pulse-Rifle
(BR)
Scout-Rifle
(DMR/Carbine)
Shotgun
(Shotgun)
Sniper
(Sniper)
Heavy Machine-Gun
(SAW)
Power based gernade
(Multiple gernade types)
Rocket Launcher
(Rocket Launcher/Hydra)
Fusion Rifle
Sword
(Energy Sword)
(Needler-Homing bullets)
(Plasma Pistol Secondary- 1 shot sheild emp)
(Plasma Caster/gernade launcher)
(SMG)
(Fuel Rod Cannons)
(Spartan Laser)
(Rail Gun)
and more promethian weapons i can't think of right now.
Now i think about it some more, there isn't really much of a difference in the combo you metioned. Actually it seems like Halo has more categories of weapons to choose from.
If you are looking at the difference in how the Auto/Precision/Heavy weapons shoot; Like colors n stuff, then maybe you won't be pleased because bungie has that locked down and doubt any shooter can top that visual flair they posess. (except insomniac - love you sunset overdrive)
Anyway, that's what i think about when you said they need to mix it up a little. ^_^