The death of rythm games

Guitar hero is a game that has been sweeping the nation from people bragging about beating the fire and flames on expert to just being a fun party game, but has this time passed? With the release of guitar hero world tour the question was raised on how many good songs are left to create on guitar hero or rock band. As I played through every song in the game I started to notice how few songs there were included on the disk and how easy they were in comparison to the last few games. Mind you, I have beatin guitar hero 3 and 1 on expert as well as rock band, rock band 2 and now guitar hero world tour but what i loved about guitar hero 3 was the challenge. I only failed one song on guitar hero world tour and haven't played the game since. I found that when the songs are easy, it's boring to play them over and over. The newest addition to the family, Guitar Hero Metallica, has promise briging the challenge back to guitar hero but is still no guitar hero 2 or 3. It seems to me that with the addition of the new instruments there came a drop in difficulty and a rise in variation of song type. Spanish songs are abundent in GHWT and the incoming country pack brings more variety to the song list but niether category delivers the difficulty for which i lust. Why is it that trying to make the game more user friendly such as adding a begginer mode means that the challenge on expert has to be watered down so that new users will buy the game. I refuse to buy any guitar hero game new until the difficulty returns and I beleive that the community should follow. It's great that they want to get more people playing their game, but taking away the finger numbing songs that appeared in previous installments to make room for this new market is rediculous. If i buy guitar hero metallica, it will be used and for well under $50. Frankly, I'm content playing fallout 3 or mass effect again instead of playing a fake guitar game that I will beat in a week.