oh what.
honestly, i'm not a huge fan of this type of rock in the first place, but modplug cannot do any time of rock. the distorted guitars just sound awful and the drums do not work.
it's not your song specifically, it's just modplug in general.
on the actual song, it comes off as a little cheesy. it might just be the type of music you're trying to make but i didn't really enjoy the melodies, chords etc.
the extremely distorted guitars sort of clash with the original clean guitar sound you looped, and the drums get a little repetitive after awhile. also, the song gets sort of boring after the five minutes. the amount of ideas you came up with would have better fit a 2 to 3 minute song, not a 5 minute, 44 second song.
it could have used more work, hell, just better songwriting.
edit: also, i'm not too sure how this is symphonic rock. you might want to read up on what symphonic rock is, and possibly listen to some symphonic rock songs.
http://en.wikipedia.org/wiki/Symphonic_rock