I think there's an overabundance of certain styles this season, and you either love them or you hate them. I suspect it has to do a lot with the economy. I remember this time last year, BR, AT, ATL, and Jcrew would offer "new arrivals" every single week! And now I notice they are updating new arrivals only about once a month.
So there is definitely not as much variety. And that means that they are going to stick with what entices people to buy. Something totally new that you don't already own in your wardrobe - a trendy item - is what many of these places are offering now: skinny jeans, voluminous tops, sack dresses, puffy sleeves. Which you either love, or you loathe. (I have gone from loathe to "like for a change- if I can get it just right and make it work for me, not against me.")
With that said, there's still an emphasis on basics, because people will always buy basics. You just have to train your eye and you'll see the basics mixed in with all the trendy pieces. AT for example I'd say is about half and half right now.
I also think you are probably becoming a more discriminating shopper!! There is a lack of structure and waist-defining clothes right now. I cannot find a decent replacement cardigan anywhere (not even talking cropped cardi - just a V-neck that is form-fitting and not full of volume, too long, too ruffly). Grrrr. These are my wardrobe workhorses. Even if I'm figuring out how to adapt to the trendier pieces, I need these pieces too! So I feel your frustration.