True. But even the so called greatest classical 100 hour symphonies tend to have only little parts that I personally think are great. Yeah, they are propably valued by composing techniques and such, but I don't think good music needs to be that much analyzed before it can be considered great. Though, for example Bach was the master of polyphony, combining huge amount of independent melodies to one incredible texture of sound. Great music doesn't always need to be easy to approach either. Actually, I'm pretty much into that kind of stuff, and progressive music. Funny thing is, I think Macross score is damn progressive, in the spirit of the original progressive rock.
Of course, Macross fandom affects greatly to my opinion.