I would not be disappointed. I agree that they know what they're doing as far as choosing a replacement. While I haven't been terribly excited about most of his output that I've heard, and I'd probably be happier if it were Lang or Minneman, I agree with a lot of sentiment I've seen about DT being an environment where new members grow into greater musicians than they were before.
I'm excited about a new DT album. If they say all seven drummers that auditioned were world class, who am I to say they didn't pick the right one. The rest of the band is world class at what they do, I trust their judgment at this point.
I'm probably in the minority here, but I can't help but feel as much as they insist the replacement will be permanent, they almost have to take that position publicly to make a point or they all look like doormats. Good for them, they made a stand and showed MP that his power play wasn't gonna fly. I can't help but feel though that any of the names thrown out as potential replacement will be "permanent" for an album cycle or two and then they'll kiss and make up with MP and come back with a vengeance. Can you imagine any of these guys names that have been thrown out sticking to their guns and saying no if a few years down the road MP wants back in and there's been enough time passed that they don't look like total wusses for letting him back in?