I think it would be interesting (not for most bands, but for DT) if for one album, everyone ONLY wrote what pertains to their own instrument. The only minor exception would be Myung helping write riffs. But Myung writes his bass parts, Petrucci the guitar, JR the keys, and Labrie all the vocals. That includes words AND melodies. Like I said, it's normal most bands, but I'd be curious to see what DT would sound like without everyone writing the vocals for labrie, or JR writing the solos and bass lines or MP writing guitar.