If we're giving unsolicited advice to the band, here would be my three cents.
1) Listen to Haken's new album. It's in a very different style from Symphony X, but it's refreshing to hear music that's so intelligent and made with minimal processing. Back to roots, if you like. It's highly complex, supremely intelligent, well played, and musically inventive, but the songs are still sweet, catchy and just plain great-sounding. (Far better than the release from that band with Drummer Troubles, for sure).
2) Mix every song on Iconoclast's second disc into a single 20-minute epic. There is a lot of great playing on that half of the album, and a lot of inventive musical ideas, but every idea doesn't warrant a full song. For example Reign in Madness has some of the best work I've heard from Symphony X, but half the song is not up to their usual standard and can be safely cut. (For example I'd toss the first 3-1/2 minutes entirely. It was over a year before I actually listened to that song, because I routinely shut it off before the 3:30 mark ever arrived). So take some ideas from that song, and from some of the others on the album, and rework them into the service of a single unified storyline.
3) Make a mini-movie, or at least write the score for one. Michael Romeo is an aspiring film composer. The Odyssey owes as much to John Williams as to heavy metal or the Baroque. So either hook up with a video game company to score the action, or find a graduate student in a film-making program, and write the score for their project. That might not be a Symphony X project as such -- or it might be, depending on the type of game/film -- but it would be a great addition for us fans either way.
Michael Romeo and Symphony X are a unique musical treasure, and Russell Allen is one of the best hard-rock vocalists in practice today, so anything that returns them to their craft is more than welcome.