Legends in the music game have often left their microphones behind and opted for a seat on a talent show judging panel. American Idol sees Lionel Richie, Katy Perry, and Luke Bryan as judges these days. But, with Katy making an exit, fans are speculating best-selling band frontman Bon Jovi is set to appear on American Idol in her place. While appearing on Jimmy Kimmel earlier this year, Katy Perry revealed her time on American Idol is coming to an end. Season 22 will be her big finale after being a judge for six years. Since her announcement, some big names in the music world have expressed th…