First impression: not surprised you love it Mosh - heavier and more progressive than anything they've done in a long time. It's right down your alley. Nothing leaped out and grabbed me, but overall I liked the sound and direction. Feels like it will be a grower.
Second impression: Caravan and BU2B are far better songs than I realized from my brief early exposure. The instrumental section in the former is vintage Rush, the chorus of the second is excellent. Clockwork Angels, Seven Cities of Gold, The Anarchist (and Headlong Flight, which I already love) are heavy, with many interesting parts, like the best stuff on AMOLAD. Can't believe the Wreckers didn't grab me on first listen, because that is one catchy, bittersweet melody. And the Garden is very interesting, unlike anything they've ever done. A definite grower and one likely to have some serious staying power.
Big thumbs up. Hard to picture serious Rush fans not loving this one.