The pilot suffered from a few things: (yes I know it sounds like vitriol)
1. The women... WTH. You have a woman in a coma by halfway through and the other woman is married, but totally ignorant. Then the third major woman is just plain evil. Yes, I get it's a fairytale, but the characters don't have to be flat. Can't they put some woman in there that isn't halfway crippled (Morally, mentally or physically)? (It fails that test... of having more than one woman in the show talk about other things than men. 'cause there are no women talking to each other.)
2. Characters of color? There are none. Grimms were german. You can slide there. But really? The major cast is all white? *sighs* Are we really sliding that far back in time? (Besides, it would be cool if they got into non-European fairytales.)
Other than that, I think it needs less police procedural and more fairytale. It was, excuse the pun, a cop out to go with police procedural as the major weight. Also less clueless main character and more kicking butt. They better get rid of the "all too mysterious" fast 'cause I'm tired of the clueless character fumbling around and not *doing* anything to make sense of his bearings. Even Buffy picked up quicker, but the main actor mostly goes around, follows other people's advice and then half whines his way through cases. Ain't gonna work for me.
Wolf stole the show, the sidekick is pretty useless at this point, and the main actor isn't grabbing me at all.
This is the type of show I would watch because there is absolutely nothing else on and I need a story fix. Once Upon a Time didn't use the All too mysterious. It showed the mystery up front and center without the exposition. Ranks above this one.