I just played through the first three tiers. I have hit every song I wanted to play (or even know) and am going to stop now. I am never going to go back to it.
No alternate costumes, no secret characters, same venues, same guitar unlockables, only 30 career songs, no unlockable songs...bleh. But most most important, the music's pretty lame and it's $50.
If you are on the fence for whatever reason: you should pass.
CAN'T WAIT FOR ROCK BAND!
1. Opening Licks
"Metal Health (Bang Your Head)" - Quiet Riot
"We Got the Beat" - The Go-Go's
"I Ran (So Far Away)" - A Flock of Seagulls
"Balls to the Wall" - Accept
"18 and Life" - Skid Row (encore)
2. Amp Warmers
"No One Like You" - Scorpions
"Shakin'" - Eddie Money
"Heat of the Moment" - Asia
"Radar Love" - White Lion[18][19]
"Because It's Midnite" - Limozeen (encore)
3. String Snappers
"Holy Diver" - Dio
"Turning Japanese" - The Vapors
"Hold on Loosely" - .38 Special
"The Warrior" - Scandal
"I Wanna Rock" - Twisted Sister (encore)
4. Return of the Shred
"What I Like About You" - The Romantics
"Synchronicity II" - The Police
"Ballroom Blitz" - Krokus[20]
"Only a Lad" - Oingo Boingo
"Round and Round" - Ratt (encore)
5. Relentless Riffs
"Nothin' But a Good Time" - Poison
"Lonely is the Night" - Billy Squier
"Bathroom Wall" - Faster Pussycat
"Los Angeles" - X
"Wrathchild" - Iron Maiden (encore)
6. Furious Fretwork
"Electric Eye" - Judas Priest
"Police Truck" - Dead Kennedys
"Seventeen" - Winger
"Caught in a Mosh" - Anthrax
"Play With Me" - Extreme (encore)