When it comes to the longer tracks, if there are some (odds are there will be), I'm hoping that we don't get much of this:
(long intro->verse 1->chorus 1->break->verse 2->chorus 2->bridge->EXTREMELY LONG INSTRUMENTAL SECTION->verse 3->chorus 3->outro)
Not that DT has never written a good song in this style (they have), but it seems to me that a large portion of their JR-era epics do something like this (BTL, Home, ES, TMOLS, ITNOG to an extent, and most of the ADTOE ones). To me, this format a) has already been done so much that it's a bit stale, b) isn't as creative/inventive as something that, say, has four or five verses, two different types of choruses, and a number of shorter and varied instrumental sections, and c) the instrumental sections tend to wander so much that they often really take away from the songwriting (see: Outcry). Having one of these songs would be fine, but I'd love to see something structured more like The Killing Hand or The Best of Times (whatever you think of those songs--I happen to love both--they're fairly unique structurally among DT tracks, especially TKH). As TKH proves, this also would allow the band to sound very proggy without taking up 15+ minutes (not that I'm opposed to them doing so).