I think i know when you are heading with this survey and i am excited to read about results! the rating and hivemind of mdl users are topics i always wanted to explore but i wasnt dedicated enough!
Little side note: In question 8) Which border do you consider as bad rating? it migh be worthy to specify it a bit more. eg. when i give a rating, i consider lower than 6 "bad" but when i check a drama and its overall rating is 7,5 or less i consider it bad.