My personal feeling of the Mangini era albums is they lack experimenting. The songs feel safe IMO. I want them to try new things, and really use Mangini for what he can really do; I want to hear crazy stuff.
MP worked with NM recently on an album called The Grand Experiment and I really liked it. Especially The Call. That song has a nice DT-ish vibe for me that's experimental and really interesting to me. Plus I obviously love the sound of MP's drums. But I just want to hear that from DT, and I want MM to take control of the drum production, but MM is too much of a team player to ever say, hey, mr engineer, I don't want my snare sounding like st anger, fix it!
I really hope this new DT album will bring something fresh and new and experimental. A bit like the jam the band had with Mangini during his audition, I really enjoyed that.