So anyways, I found this little site right here, and it gives all the difficulties for the new Rock Band Songs, as well as the updated tiers from RB for all the songs you can import. I guess they figured 9 was a little excessive, but anyways I'm going to change up the setlist to accommodate the new 7 tier system. Tiers will be longer, but I get to try out more songs. The DLC choices (I don't know, I have to double check) will still be the same.
Tomorrow is another double song update.