No SPAS-12 and the .44 Mag shoots slower. I've used these two guns for years. I'll have to test the range of the new pump action shotgun, but I'm sad to see the SPAS-12 go. I'd rather see the M1014 go, but I am biased towards pump actions.
Aside from that, Hunter Killer and Stealth are still the same perk spot. Two mods ago, I loved using Scavenger, Stealth, and Hunter Killer with a silenced Intervention sniper rifle. I could truly be stealthy. It takes way too long to steady the crosshair of the sniper rifles. Without Hunter Killer, you waste almost your entire breath to steady it. In other Call of Duty games, I run and gun with sniper rilfes. Here, you're better off with a crossbow or a pistol. I don't know if the defrost mechanic added sway to the crosshair, but to be honest, I'd rather not be able to defrost with the sniper rifle in exchange for shorter steady time. Right now, and even in our current mod, if you don't use a Steady Cam, you literally have to wait a few seconds to even take a shot.