Did I say a lot of thought went into it? Not equal amount of thought went into all parts of the game unfortunately. For all I know they said "Gnoll - power attack fits", they took a quick look and said they meet the prereqs (maybe they didn't always do that).
Anyway, I still stand by it sounding like you want to "max/min" your monsters and that's metagaming to me. I have no issue with you changing stuff for an particular tribe, individual, etc, but to come here and complain about the "default" monster in the MM just seems like min/maxing to me.
And I never said the monster must, must take anything. That's dcollins. I'm just saying, it's the default monster - live with it. If you don't like it, freaking change it like you've been told already. Stop whining that the designers were smoking up or something when they picked the feats.
What low-level feat do you think (from the Core rules) that a Gnoll should have had instead?
You asked for a reason WHY some monsters seem to have a useless (in your opinion) feat as a default. I've suggested that possibly because the designers thought that said feat "fit" with how they see the monster operating. If you don't like said feat, change it.
IceBear