I think #1 isn't necessarily "quality of music" more than musicality or knowledge of music/vocals 2. innovation (aka originality) 3. charisma/likeability 4. abiloty to play a musical instrument/produce their own tracks 5. durability/marketability (you want to be able to not only make good music and have fans, but also sell records) 6. one or more overlapping interests like fashion, modeling, acting, art, etc. 7. taste level unless you're looking for the new Miley Cyrus