I just hope it won't be another DT12. Full of short songs with no actual meat in them (meat - great middle instrumental section which evolves to the climax of the song, like octavarium, itpoe, tmols, itnog, bits, ...)
These are the songs that I really end up loving and looking forward to hear again. I want typical DT form (which can be explained as a great middle section and the part surrounding it), not some mediocre middle sections with some keyboard/guitar solo here and there.
Songs on the last two albums were good, but only when I'm in that kind of mood to chill a bit and hear them - not a single song that can be considered a ''masterpiece'' (apart from maybe illumination theory, but that song is also a big IF as well).
To be clear, I don't want every song like that. I'd be happy if there's only a few. But keep in mind that we haven't had this kind of songs since ADTOE.