Metallica New Album: 10 Old-School Thrash Lessons They Need To Relearn

10. A Collaboration With Dave Mustaine

Decades have passed since Dave Mustaine was abruptly kicked out of Metallica. After waking up from a drunken stupor once they reached the East Coast, the rest of the band read him the riot act and sent him packing right before going into the studio to cut Kill Em All. Even though Mustaine eventually took his ideas into Megadeth, there are traces of his style laced throughout some of the band's classic '80s material, from "The Call of Ktulu" to "Leper Messiah."

So does Mustaine necessarily have to be in the band again? No. What Megadeth has done for the metal community is in a class by itself, but it could benefit Metallica to at least have a collaborative back-and-forth with their former erratic guitar player. Mustaine always had the more technical finesse of every musician in the band, and we might be able to see some of that magic in action if they come together for a jam session in the next few years.

While Kirk Hammett is the blues-flavored metal god, the addition of Mustaine for at least one track might reignite the fire that these guys once had back when they were slogging it out on the streets of San Francisco.

People have never failed to bring up the rivalry between Metallica and Megadeth, but if both sides were able to put their guards down for a single song, we may have something amazing on our hands.