I think, at times, we really understate how Myles wants to go heavy as well. Other than AB, he doesn't have a platform to showcase that. In a song that he did with Mark Morton of Lamb of God, Save Defiance, it felt like an AB song, just without certain characteristics that can put it on par with the best of the catalog.
I need to listen to that. - that's really good! I am not a LoG fan, so that album flew under the radar for me. If I like the rest of it, I'll be purchasing the album. If not, at least that track (the one with Chester Bennington is good too. Just started listening to the full album).
Regarding Myles' desires, I think he knows what's a riff for solo vs. what's a riff for AB. The thing is, there's a lot of blend, since Tremonti uses a lot of his blistering stuff for his solo band, and then comes up with other more melodic stuff as he can for AB. So there's always a nice balance.
For me, AB is what I love about a band. A balance of straight ahead hard rock, mesmerizing epics, and a powerful vocal. I know some people disagree when I say they remind me of Queensryche in their heyday. But they absolutely do. AB reminds me of Mindcrime/Empire/PL era Queensryche, with a touch of speed metal thrown in. (Kennedy is the DeGarmo on guitar, whereas Tremonti is probably a more versatile - with all respect to Whip - version of Wilton). And just like Queensryche, I feel Alter Bridge is at their best when they do the more mid-tempo epic (Blackbird, Show Me a Sign, The End is Here, Fortress, Cradle to the Grave, etc., vs. Roads to Madness, Anybody Listening, Screaming in Digital, Promised Land, etc.). To me, that epic thing is AB's bread and butter.
I totally dig them doing the heavier, faster stuff (with Tremonti, you're always going to have that speed metal), and they do it really well. But when Mark and Myles come up with those big sounding, dramatic tunes, it's what really gets it for me.
And the nice thing is, all four of the AB guys get it. They know what they are good at, and strive to deliver that on each record. They pay a lot of attention to not only what they want to do as songwriters and push forward into new territory, but they are conscious of what they are good at, and try to give a good balance of everything with every new album.
Anyway, Myles digs the heavy for sure, but for me, I'm glad they continue to provide a balance. It makes for a way more dynamic record each time out.