This is part of the problem, given the problems WOTC has had in the last year, particularly in regards to Orion Black. Valuing the "old boys club" creates an insular environment, and that's why you get these problems: you're stuck with guys who have been working in this for 20-25 years, rather than people who have a view of what is going on now.
I mean, they don't stand out from those because it's all about being generic killers. This is the problem with these monsters: bloodthirsty killer of the anti-social variety is not particularly more interesting or different than that of the demonic-blooded kind. When you're just mad dog killers, what is the difference? Oh, you kill because you're really angry?
Those sorts of creatures barely need MM entries. If that's what you want, then why even have any more explanation? It's antithetical to what so many people here want from them. But you can map out the broad strokes of a culture that isn't just killing stuff and actually make it way more distinct comparably.
Yes, because their "niche" is not really a "niche": there are plenty of monsters that are just bloodthirsty, unreasoning killers. Grimlocks were mentioned previously, and at least they have an interesting backstory and mechanical hooks.
See I don't think there are many humanoid monsters that fill the same roll. Grimlocks are even more mindless than orcs and closely associated to mindflayers. Orcs at least have some culture even if it's a culture of murder and mayhem. Hobgoblins are militarily minded and far more organized. Goblins? Evil cowards.
It's racist in the real world to call everyone of a specific background or ethnicity dangerous. On the other hand I don't think it's racist to say that a sociopathic serial killer is dangerous no matter what their background or ethnicity is.
If you have a non-human creature that are effectively all sociopathic serial killers I don't think it's racist to call them dangerous. They are dangerous.
