I'll never get why lenght of a song ALWAYS comes up. Its quality not lenght and I believe SX still delivered quality on PL and all the classic SX MUSICAL trademarks were still there. Epic doesnt HAVE to be long and as it was PL was a long epic CD in a entire piece of work.
Sellout is a bullshit word too, who wants to keep playing the same friggin song over and over to appease fans with terminology quirks. "Damn you, you didnt write another For Whom the Bell Tolls", 'You didnt write another Through the Looking Glass"... yeah so, what do you expect ? Frankly if they did a progressive neo classic warped rockabilly CD I'd give them alot of credit and probably enjoy it with a shit eatin grin.
I don't think anyone was talking about length with reference to PL, since there is a lot of good writing on that album. There's almost a full minute of awesomeness in Domination after the solo section that doesn't technically
need to be there but makes the song so much more awesome because it is. Really, they didn't have to put it in there, album might have even sold the same, but that's precisely why they aren't "just another prog/power band." They can pull stuff like that out and make it work.
And that's the thing about length. Longer does not necessarily equal better, but precisely for that reason it is a sign of talent if someone can write something that is longer AND better. Nobody wants to listen to nine minutes of random proggish noodling just for the sake of being nine minutes long of a song, but nine minutes of Revelation? It fits together, flows, and keeps your attention. And longer songs are the only way to develop some of the bigger emotional arcs, such as in the Odyssey. Champion of Ithaca just sounds different when you've listened to the whole thing through.
When you write an album full of songs 3:00-4:00 long, with the typical ABABCBB song structure, it's like high fructose corn syrup. You can put it into just about anything and make it taste sweet, which is why it's in all our foods and in all of our radio hit singles, but it will also never be anything more than just another sugary drink or just another Top-40 track. There might be good sounds and good ideas in the songs, but they'll be underdeveloped and stifled. The problem is that it takes a lot more talent and skill to see if you can actually develop them to their potential in a longer format and not ruin it.
Shorter structure also works well for things like folk music because the point is to use the music as a steady background to tell a story or highlight the voice of someone. Classical music, on the other hand, is all about expressing the ideas through the musical composition itself (that's a big generalization, since there is still a LOT of structural formality in many styles of classical), and power metal/prog needs to have varied moods and themes in the music, because otherwise it becomes the exact same thing as any pop hit single, but with distorted guitars, double bass drums and rougher vocals. Symphony X is a band of ideas, which is why I have stuck with them for so long. I have become disillusioned with plenty of other bands before, but I haven't heard a song from Symphony X yet which makes me think that the guys just slapped it together without TLC.