Until the day that premades of more than, say, 3-4 people aren't matched up against randoms anymore, I support nerfing Cometeor. That 5 second LB immunity after getting hit by an LB someone suggested in this thread sounded rather good to me. That way, Cometeor can stay strong and really useful when used correctly, while removing the cheap instant kill crap premades are so happily abusing all over the place.