As a die hard, unapologetic fan of the band, I'd have to agree that it felt a little middle-of-the-road. I didn't hate it, but it didn't blow me away. The thing that makes me nervous about these first two singles is that they seem a little simplistic compared to their previous work. The first two singles from Phantom Anthem were Invisible Enemy and The Frost, and these two songs are, to put it bluntly, not on that level in my opinion.
That being said, I'm still excited for the album and I enjoyed Defender and I'm sure Bones will grow on me. I just worry that this album may be their foray into more accessible, mainstream music and a departure from the heavy, technical music we're used to.