On the actual topic.....I have a different view of this. To me, I appreciate the way the solos on DT12 seem to be much more a part of each song rather than a lot of exuberant/odd-meter/mathematical speed-shredding. That's not to say that those type of solos aren't cool. I love just about everything that JP comes up with. And I've loved all of the guitar work on pretty much every Dream Theater album. But as a songwriter myself, in a similar genre to boot, I really, really admire what he did with DT12's guitar playing. It's easy to write songs that have verse-chorus-verse-bridge-shredding-verse-chorus-end. Guitarist shreds over verse chord progression...blah, blah, blah....you take songs like The Looking Glass, The Bigger Picture or even Enigma Machine and man....just as a guitarist I'm blown away by this stuff. Such good songs. The progressions, the riffs, the melodies, all of it.
This band has been writing incredible music for a few decades and they were still able to put out a really excellent quality piece of art. Does it have some flaws? Yeah, sure it does. Every album does. You just can't be all things to all people all the time. No one can.