Rockit is a success...Sure, the ride has it's issues, but so does every other state of the art rollercoaster. Remember Rockit is the first of its kind.
For the music issues: Today's music is not garbage at all...Just because it is modern, everyone not born in this era will agree that today's music is "garbage". The 1980's developed some of the greatest music of all time, but there was still some people then that said the music was 'garbage'. The music does need to be updated, I personally get extremely tired of listening to the same songs everytime I ride: Don't Funk With My Heart-Black Eyed Peas, Sabotage-Beastie Boys, Paralyzer-Finger Eleven, Stronger-Kanye West. It just gets boring. (Which will never change the fact that Rockit is an extremely fun rollercoaster and the ride layout never gets boring itself.)