Actually I think Chester's voice is a huge part of what got them where they are today. They really never went anywhere until he joined the band, absolutely no disrespect to Mike. And while Mike may do a majority of the song writing, he doesn't write ALL of the songs. I distinctly remember reading/hearing that Chester was pretty much behind waiting for the end (recorded the melody on his Iphone) and wrote the lyrics to TLTGYA for example. He also wrote crawling and somewhere I belong.