I appreciate the era-specific paint jobs on the FEFs. They look beautiful, but they're well beyond my price range as a college student. (The VLBB has done me in for the foreseeable future.) If anything, I may preorder the NYC GP9.
I'll also say that, while I don't see myself purchasing any, I do appreciate the wide variety of accessories introduced/reintroduced this time around.
Still hoping for a Legacy Niagara and VL Santa Fe F-3s in the future, but I suppose we'll see. Beyond that, the biggest item on my wishlist is DIY fixed pilots a-la-Atlas O; they make such a difference. I also noticed Lionel giving more scale-coupler-ready options, which is great; I hope to see more of that as well.
Here's to my wishes being granted in 2016!