Speaking for myself, I can honestly say that DT has not been the same for me since September 2010. Mangini is a monster drummer and can play the sh*t out of just about anything. However, neither he nor anyone else left in the band has the presence MP had. Anc, I just haven't had the same enthusiasm for the material or the shows since then. Granted, a lot of that has to do with me being middle-aged, married with a nine-year-old and just not having the time I once had to dedicate to music. And, TA (both album and tour) killed a lot of the enthusiasm I still had left. But DT post-MP just doesn't have the same spark. It has become somewhat robotic (IMO). The first two albums they did were fine but, to me, don't hold a candle to the MP-era material. And, as has already been mentioned, the (fairly) static setlists make it a little less exciting concert-wise.
That being said, I can't wait for an announcement of an IWaB US tour. Having come aboard the DT train when I&W first came out, to have a tour where they're focusing on the first material I discovered and loved from them is awesome.
I really hope the next album has a little more life.