I will repeat was some others have said and say that I don't care what they do, as long as it is good. It is their band after all.
Sonically, I hope they're responsive enough to their fans to make some changes, because it seems like they're headed in the wrong direction as far as production is concerned... What I'd really like is a crisp, natural sound like Six Degrees.
Have you heard 'The Looking Glass' from BtFW? it looks like DT are listening to the fans there, as the sound is vastly superior to LaLP there. Also, look at SDoIT here:
https://dr.loudness-war.info/album/list/year/desc?artist=dream+theaterSDoIT is in the "bad" category with a Dynamic Range of 7. For comparison, DT12 is only one lower with a DR of 6. It's not like they've fallen ridiculously far in 12 years. Plus, with the HDTracks version of DT12 having a DR of 12, it leaves SDoIT looking a little suffocated, especially in something like 'The Glass Prison', where it clips at the FIRST BASS DRUM! Also, when the tom beat comes in at about 1:50, I swear that the guitar goes to about half its previous volume like it's struggling to breathe! Not such a great start for an album supposedly having a crisp, natural sound!
Don't get me wrong, I LOVE SDoIT, but whenever someone says that it sounds amazing, I get a little confused. Does minimal dynamic range just not damage SDoIT as much as other albums? FII gets this treatment as well; look at the waveforms! the heavier moments don't look much better than this:
Sorry for that rant, but so many people say that when what I hear doesn't match up at all.
The best sounding DT albums for me would be IaW and 'Awake'. 'Awake' especially sounds fantastic, as it has a more natural sound than IaW, even if it's a bit cold sounding (but it is quite a dark album so that suits it well). ACoS also sounds pretty good, but the snare sound lets it down. I wouldn't mind DT13 sounding close to one of those, although I'm aware that it's quite a stretch to say it will as they all have a sound of their time, as does DT12.