Okay, here's my take on the album after a couple of initial listens:
The album is actually quite diverse, and certainly way more diverse than you'd expect after Glenn's comments that the fans should expect a much more direct album after Nostradamus. In fact, there are quite a lot of nods to 70's Priest on the album, in particular on the tracks "Crossfire" and "Beginning Of The End", but also appears in other songs. The production is certainly the main weak spot on the album, but it's certainly not enough to ruin the album. On the subject of solos, I agree much with Saapanael. On most of the previous Priest albums, Glenn has taken the biggest proportion of the solos, whereas that role seems to be taken by Richie this time. And there are a lot of guitar harmonies, but no real long, epic solos, which is a disappointment. Also, Glenn's tone seems rawer than usual, and his playing is also a bit more sloppy and not smooth and measured like he is known for. The fact that Glenn's guitar seems lower in the mix than Richie's also doesn't help matters on his end. And as mentioned above, Glenn's solo on "Hell & Back" sounds like K.K. did a guest spot on the album! Not that that is necessarily a bad thing, but the lack of Glenn's distinct style on most of the album is disappointing.
Overall, the diversity of the album is it's greatest strength, and it's in this regard that the listener can become really engaged with the album. For all the album's flaws, it's Priest's return to a more adventurous nature which pulls it out of the fire and makes it a worthy addition to the Priest canon. There's elements of pretty much every era of the band present on the album, which makes the album ultimately a winner for me!