So far I love Infection. its so fun and I get why they took out the magnum as a load out but what if they take out AR and use the SMG as well since people can snipe with AR.
I think the loadout is pretty balanced. Sure the AR can be used at long range however it takes a few shots to kill so it gives the infected time to get to cover where as before the 1 head shot kills with the magnum just got annoying. SMGs would just make the zombies OP as you would only get a kill or 2 from one clip.
This is the best infection on halo to date. The lack of ammo and scattered power weapons around the map makes the game move rather than everyone just camp in a corner. And even if you do camp, eventually you have to go and scavenge ammo off fallen survivors.