Stealth rolls should be important, but somehow I could stealth-murder all of the temple undead and Blighted Village goblins without ever having to even roll for Stealth. Playing on a Fighter in Scale Mail.
Many enemies are too static, they never investigate an attack, or move towards your last known location, or even turn. Their "visibility cones" can be totally abused. Sound is not even a factor. It doesn't matter if you're in heavy armor or carrying a barrel, they hear nothing unless you step in their "visibility cone".
The windmill goblins even just got a lower approval rating when I murdered a few of their friends from Stealth and they stayed neutral.
Should have to roll for Stealth a lot more, the visibility cones should be longer and wider, and sound when sneaking up on someone should also trigger Stealth vs Perception checks. And enemies should go investigate a ranged attack...