All I can say to this is to wait and check out the book. There's no way a book like this can be perfect for everyone, although we're trying to get as close to that goal as we can without going insane in the process. I do know that in the sections Erik and I have done, only 10% or so would fit into the category of "new player options." I know that I certainly agree that we've got more than enough new feats, tactics, spells, and equipment for PCs—anything new at this point needs to be justified and supported by flavor and story.
I can say this, though: a lot of those new options for PCs aren't necessarilly good for "fighting" demons, but ARE pretty good for PCs who want to gain new powers and abilities by consorting with them or summoning them to use them as minions or to steal powers from them.