^Well, Biblical angels were always kind of badasses. Isn't there something about cherubim with flaming sword? And I've heard there's one kind of angel that's some sort of terrifying ball of eyes, like that thing from Big Trouble in Little China but bigger and more flamey or something. The idea of angels being benevolent, gentle entities is more from folklore and Renaissance art, I think.
I didn't mean in terms of the good/evil nice/mean spectrum, but rather in terms of characterization. With rare exception, most angels depicted in recent works (say, over the last decade or so) have been pretty bland. I don't mind dark, but I can't stand stale and cliched. Orion is kinda like a talking cemetery statue.
But to your point on badass angels, I think that's the general state of things these days, as the feathered faction goes. Of late they've pretty much uniformly been portrayed as, to paraphrase Dean Winchester, "dicks with wings". From Walken's Gabriel to Head Six to pretty much every angel on Supernatural and Constantine, Jonathan Smith they are most certainly not.
I do think it would be pretty spectacular if they did show one of those angels with like eight heads, wheels and a hundred wings or something. Probably wishful thinking.
(In all honesty, though, I do hope they keep the halo brigade to a bare minimum in Sleepy Hollow.)