In terms of gameplay mechanics, old school zoom aiming achieves the same thing as ADS. Is getting to press your nose against virtual firearms really that important in a game about shooting werevolves and vampires?
I blame this on the proliferation of Call of Duty over traditional scifi and fantasy shooter franchises. You can fucking ADS on an assault rifle in Halo now 
yea, i actually liked everything in 5 except the microtransaction loot drops and the forerunner enemy types in the campaign, the covenant are much more visually interesting and tactically varied imo. also there seemed to be a lot less vehicle sandbox maps in the campaign compared to like halo 3